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Gotu Kola (Centella asiatica): Uses, Safety, and What to Know

Overview

Plain-English information for everyday use

1. What Is Gotu Kola?

Key Takeaway

Gotu kola (Centella asiatica) is a small leafy plant used for centuries in Ayurvedic and Asian traditions — and lately popular in skincare as "cica." It's taken by mouth and applied to the skin. The research is most encouraging for leg circulation and skin repair, and it has a few real safety points worth knowing.

Gotu kola is the common name for Centella asiatica, a low-growing wetland herb in the carrot family (Apiaceae). It's also called Indian pennywort, and in skincare you'll see it as "cica" or "tiger grass." It has a long history in Ayurvedic and Traditional Chinese medicine and is eaten as a leafy vegetable in parts of South and Southeast Asia. Razali NNM, et al. 2023. Open Source ↗

Its active ingredients are a group of plant compounds called triterpenes — chiefly asiaticoside, madecassoside, asiatic acid, and madecassic acid. Standardized extracts are measured by these compounds; one common form (often labeled TTFCA or TECA) is set to about 40% asiaticoside plus asiatic and madecassic acids. European Medicines Agency (HMPC). Centella asiatica assessment report. Open Source ↗

One quick note to avoid confusion: gotu kola is sometimes called "brahmi," but so is a different herb, Bacopa monnieri. They are not the same plant — if you're taking both, you may be doubling up on calming effects without realizing it. Razali NNM, et al. 2023. Open Source ↗

Key Highlights

A leafy herb (Centella asiatica) from the carrot family, used in Ayurvedic and Asian traditions
Taken by mouth (whole herb or standardized extract) and applied topically as "cica" skincare
Active compounds: triterpenes — asiaticoside, madecassoside, asiatic acid, madecassic acid
Best-supported areas: leg-circulation support and skin repair
Key cautions: rare liver injury, drowsiness, avoid in pregnancy (see Section 3)
Don't confuse it with Bacopa monnieri, which is also nicknamed "brahmi"

2. Why People Take Gotu Kola

Key Takeaway

People reach for gotu kola for several different reasons — leg comfort and circulation, skin and scars, memory and mental clarity, and feeling calm. The evidence is stronger for some of these (legs, skin) than others (memory, calm).

Gotu kola is unusual in that people take it for quite different goals. Common reasons include: Razali NNM, et al. 2023. Open Source ↗

Support for tired, heavy-feeling legs and healthy leg circulation
Skin support — including the look of scars, stretch marks, and aging skin (topical "cica")
An interest in memory, focus, and mental clarity
A traditional reputation as a calming herb during everyday stress
A cultural or culinary connection (it's a traditional leafy food)

These reasons are broad and not specific to a single proven effect — feelings like "tired legs" or "wanting to feel calm" can have many different causes. Gotu kola is a traditional herb, not a remedy for any specific health problem, and no single herb taken alone is a substitute for sorting out the underlying cause. How well it's studied varies a lot by goal (see Section 6). If you're considering it for a specific health reason, talk with your healthcare provider — and read the safety section below, because gotu kola has a few cautions that not every herb does.

3. Who Should Be Careful or Talk to a Provider

Key Takeaway

Avoid gotu kola by mouth if you're pregnant or breastfeeding, and avoid it if you have liver problems. Be careful — and check with your provider — if you take sedating medicines, drink alcohol, take a medicine for blood sugar, take anything hard on the liver, or have surgery coming up. It can also make you drowsy.

Most people tolerate gotu kola well, especially short-term, but talk with your healthcare provider before using it — and in some cases avoid it — if any of the following apply:

You have any liver problems or have had a liver reaction to a supplement or medicine before. Gotu kola has rare reports of liver injury, so it's best avoided if you have a liver condition, and used cautiously (with periodic liver tests) otherwise. LiverTox. NIDDK. Open Source ↗
You take a sedating medicine (such as sleep aids, certain calming or allergy medicines, or strong pain medicines) or drink alcohol — gotu kola can add to drowsiness. Gohil KJ, et al. Indian J Pharm Sci. 2010. Open Source ↗
You take a medicine for blood sugar. Gotu kola may affect blood sugar, so monitor it and coordinate with your provider. Puttarak P, et al. Sci Rep. 2017. Open Source ↗
You take a medicine that can be hard on the liver — combining it with gotu kola may add to the strain, so monitoring is sensible. LiverTox. NIDDK. Open Source ↗
You have surgery coming up. Because gotu kola can be sedating, providers often advise stopping it about one to two weeks before surgery. Gohil KJ, et al. Indian J Pharm Sci. 2010. Open Source ↗
You're allergic to plants in the carrot/parsley family (such as celery, carrot, or fennel) — gotu kola is in that family and could cross-react.
You'll be driving or operating machinery soon after taking it — see how it affects you, since it can cause drowsiness.

If You're Pregnant or Breastfeeding

P-3 — Avoid (evidence insufficient) Breast-milk transfer: T-U (unknown)

Pregnancy: Avoid gotu kola by mouth during pregnancy. There isn't reliable safety research in pregnancy, and gotu kola has a traditional reputation for affecting the menstrual cycle and pregnancy (it was used as an emmenagogue/abortifacient). With that red flag and no good safety data, the cautious choice is to avoid it — talk to your OB or midwife about anything you're considering. Gohil KJ, et al. Indian J Pharm Sci. 2010. Open Source ↗

Breastfeeding: Avoid gotu kola while breastfeeding. There's no research on whether its compounds pass into breast milk or how they might affect a nursing baby, so the exposure is unknown and the safe choice is to avoid it. Bring any questions to your pediatrician. LiverTox. NIDDK. Open Source ↗

Discontinue and Seek Medical Attention If:

You notice signs of liver trouble — yellowing of the skin or eyes (jaundice), dark urine, pale stools, pain in the upper-right belly, unusual tiredness, or nausea and loss of appetite. Stop gotu kola and get liver tests; most reported cases recover within one to two months of stopping. Jorge OA, Jorge AD. Rev Esp Enferm Dig. 2005. Open Source ↗
You develop an allergic skin reaction from a topical product (a rash, redness, or itching where it's applied), or a more general allergic reaction with swelling or trouble breathing. Haftek M, et al. Exp Dermatol. 2008. Open Source ↗
You feel excessively drowsy or dizzy.

Children: there isn't enough safety information for children, and a serious liver-injury case has been reported in a teenager — so gotu kola is best avoided in this age group unless a pediatrician advises otherwise. Jorge OA, Jorge AD. Rev Esp Enferm Dig. 2005. Open Source ↗

4. How to Use It Sensibly

Key Takeaway

Match the form to your goal (a standardized oral extract for leg support, a topical for skin), don't take it continuously for long stretches, pick a third-party-tested product, watch for the warning signs in Section 3, and keep your provider informed.

Sensible Ways to Approach Gotu Kola

Match the form to the goal. The different preparations aren't interchangeable — a standardized oral extract is what most leg-circulation research used, while skin goals usually use a topical product; whole-herb capsules and teas are different again. Gohil KJ, et al. Indian J Pharm Sci. 2010. Open Source ↗
Don't take it continuously for months. Because the rare liver reactions have shown up after several weeks of use, it's wise to limit continuous courses, take breaks, and have liver tests if you use it for a while. LiverTox. NIDDK. Open Source ↗
Choose a tested product. Gotu kola has real quality problems (heavy metals and frequent mislabeling — see Section 10), so third-party testing matters. Biltes R, et al. Food Biosci. 2025. Open Source ↗
Give it time, then reassess. Studies generally ran for several weeks; if you don't notice a benefit by around 8–12 weeks, there's little reason to continue. De Sanctis MT, et al. Angiology. 2001. Open Source ↗
Mind the drowsiness. Try it when you don't need to drive, and avoid stacking it with other sedating substances or alcohol.
Keep your provider in the loop — especially about liver concerns, sedating medicines, and any medicine for blood sugar.

5. Side Effects

Key Takeaway

Most side effects are mild — stomach upset and drowsiness are the common ones, and topical products can occasionally cause a skin reaction. The one serious-but-rare effect to know is liver injury, which is why duration and warning signs matter.

Gotu kola is eaten as a food and is generally well tolerated short-term. The common, mild effects are: Gohil KJ, et al. Indian J Pharm Sci. 2010. Open Source ↗

Stomach or abdominal discomfort, nausea, gas, or constipation
Drowsiness or sedation, especially at higher doses — sometimes with dizziness or headache
From topical products: an allergic skin reaction (redness, itching) or increased sun sensitivity in some people
Increased need to urinate, reported by some

The effect that matters most is uncommon but serious: rare reports of liver injury, which has usually appeared after several weeks of use (sometimes with weight-loss products) and typically gets better within one to two months of stopping. See Section 3 for the warning signs — and this is why it's wise not to take gotu kola continuously for long periods. LiverTox. NIDDK. Open Source ↗ Jorge OA, Jorge AD. Rev Esp Enferm Dig. 2005. Open Source ↗

6. What Research Suggests

Key Takeaway

The most encouraging research is for leg circulation (using a standardized extract) and for skin and wound repair. Evidence for memory and calm is weaker and preliminary. Which preparation you use matters — the studies are not interchangeable across forms.

Leg circulation (best-supported). A review of eight randomized trials found that a standardized gotu kola extract supported microcirculation in the legs and was associated with less swelling and less of that heavy, achy feeling. The authors cautioned that many trials were small or had design weaknesses and much of the research came from one group, so the confidence is modest rather than strong. Chong NJ, Aziz Z. Evid Based Complement Alternat Med. 2013. Open Source ↗ A dose-comparison trial found the effect was dose-related, with a higher daily amount working better than a lower one. De Sanctis MT, et al. Angiology. 2001. Open Source ↗

Skin and wound repair. Gotu kola's triterpenes support collagen and the skin's natural repair processes, which is the basis for its long use on minor wounds, scars, and aging skin. A controlled study using both oral and topical gotu kola found improvements in skin-quality markers, though studies overall use varied preparations and are modest in size. Legiawati L, et al. Evid Based Complement Alternat Med. 2020. Open Source ↗

Memory and calm (weaker). A review of cognition-and-mood studies found gotu kola of interest for memory and mental clarity, but the trials were small and mixed, supporting only low confidence. Puttarak P, et al. Sci Rep. 2017. Open Source ↗ For its traditional calming reputation, one small controlled study found a single dose lessened a startle-related response — a preliminary hint, not proof. Bradwejn J, et al. 2000. Open Source ↗

European regulators recognize gotu kola preparations in a traditional-use framework, which reflects long-standing use rather than the high-quality outcome trials a medicine would need. The honest summary: promising in a couple of areas, preliminary in others. European Medicines Agency (HMPC). EU herbal monograph: Centella asiatica. Open Source ↗

7. What Gotu Kola Is & Where It Comes From

Key Takeaway

Gotu kola is a leafy wetland herb, so it's a food as well as a supplement. It's eaten fresh in parts of Asia (for example in the Sri Lankan porridge "kola kenda") and sold as teas, capsules, standardized extracts, and skincare.

Unlike most supplements, gotu kola is a vegetable you can eat. The small, fan-shaped leaves grow in damp, tropical and subtropical areas across Asia, and they're a traditional leafy green — famously in the Sri Lankan herbal porridge kola kenda. Chandrika UG, et al. Adv Food Nutr Res. 2015. Open Source ↗

As a supplement it comes in several forms: dried leaf and tea, whole-herb capsules, standardized triterpene extracts (such as TTFCA), and topical creams and serums for the skin. These forms differ in strength and intended use, so they aren't interchangeable. Gohil KJ, et al. Indian J Pharm Sci. 2010. Open Source ↗

8. Body Systems It's Linked To

Key Takeaway

Gotu kola is most associated with the circulation (leg veins), the skin, and the nervous system. The circulation and skin links have the most human support; the nervous-system links are mostly early research.

The systems most often discussed with gotu kola are:

Circulation and leg veins. Its triterpenes support connective tissue and small-vessel circulation, which is the basis for its use for tired, heavy-feeling legs. Chong NJ, Aziz Z. Evid Based Complement Alternat Med. 2013. Open Source ↗
The skin. Gotu kola supports collagen and the skin's repair processes, which is why it's so common in scar and "cica" skincare. Legiawati L, et al. Evid Based Complement Alternat Med. 2020. Open Source ↗
The nervous system. Laboratory and early human research explores effects on memory, mental clarity, and a calm state, but this work is preliminary. Gray NE, et al. Phytochem Rev. 2018. Open Source ↗

These are general, structure-and-function ideas — these are not medical claims about these systems.

9. Frequently Asked Questions

What is gotu kola used for?

Gotu kola is a traditional herb that people use for several different goals: supporting tired, heavy-feeling legs and leg circulation, supporting the skin (including the look of scars and aging skin), and — with weaker evidence — memory and a calm state. The research is most encouraging for leg circulation and skin; it's preliminary for memory and calm. It's a traditional herb, not a remedy for any specific health problem. Chong NJ, Aziz Z. Evid Based Complement Alternat Med. 2013. Open Source ↗

Is gotu kola safe?

For most people, gotu kola is generally well tolerated, especially short-term, and it's eaten as a food in some cuisines. The main things to know: it can cause drowsiness, it has rare reports of liver injury (so don't take it continuously for long stretches, and watch for warning signs), and it should be avoided in pregnancy and breastfeeding. Topical products can occasionally cause a skin reaction. LiverTox. NIDDK. Open Source ↗

Can gotu kola hurt your liver?

Rarely, yes. There are published reports of liver injury linked to gotu kola, usually appearing after several weeks of use. The good news is that it appears to be an uncommon, individual reaction, and most people recovered within one to two months of stopping. To stay safe: avoid gotu kola if you have a liver condition, don't take it continuously for long periods, and stop and seek care for signs like yellowing skin, dark urine, or unusual tiredness. Jorge OA, Jorge AD. Rev Esp Enferm Dig. 2005. Open Source ↗

Does gotu kola make you sleepy?

It can. Drowsiness is gotu kola's most common noticeable effect, and it's more likely at higher doses. Because of this, it can add to the effect of sedating medicines, sleep aids, or alcohol. Try it when you don't need to drive or operate machinery, and let your provider know if you take other medicines that cause drowsiness. Gohil KJ, et al. Indian J Pharm Sci. 2010. Open Source ↗

Does gotu kola interact with medicines?

Reassuringly, gotu kola has a low tendency to change how the body processes most medicines — a careful study found it didn't meaningfully switch on the main drug-handling liver enzymes. The interactions that do matter are mostly about overlap: it can add to drowsiness from sedating medicines or alcohol, it may affect blood sugar (so monitor if you take a blood-sugar medicine), and combining it with other things hard on the liver is worth avoiding. Wright KM, et al. J Pharm Sci. 2025. Open Source ↗

Is gotu kola the same as brahmi or Bacopa?

Not exactly. "Brahmi" is a name used for both gotu kola (Centella asiatica) and a different herb, Bacopa monnieri — they're separate plants with overlapping traditional uses and both can be calming. If you're taking products labeled "brahmi," check which plant they contain so you don't unintentionally double up. Razali NNM, et al. 2023. Open Source ↗

How do I choose a good gotu kola product?

Quality really matters here, because gotu kola has documented problems: it can take up heavy metals from soil, and testing has found many products mislabeled or substituted with other plants. Look for a product that clearly names Centella asiatica, states its triterpene content (or names a standardized extract like TTFCA), and has been third-party tested for identity and for contaminants such as heavy metals. Biltes R, et al. Food Biosci. 2025. Open Source ↗

10. Choosing a Quality Product

Key Takeaway

Gotu kola has a reputation as a "dirty herb": it can accumulate heavy metals, and testing finds frequent mislabeling. Look for clear species labeling, a stated triterpene content or named standardized extract, and third-party testing for identity and contaminants.

Gotu kola has more quality pitfalls than many herbs. It readily takes up heavy metals such as cadmium and lead from soil, it's mostly wild-harvested (with concern about over-collection of wild plants), and DNA testing has found that a large share of products are mislabeled or substituted with look-alike plants. Biltes R, et al. Food Biosci. 2025. Open Source ↗

What to Look For

Clear species labeling: the product should name Centella asiatica — not just "brahmi" or "gotu kola"
Standardization: a stated triterpene content (such as % asiaticoside) or a named standardized extract (such as TTFCA/TECA) shows the maker measures quality
Identity testing: confirmation it's genuine gotu kola, not a substituted plant
Contaminant testing: third-party screening for heavy metals (especially cadmium and lead) and microbial contamination
The right form for your goal: a standardized oral extract, or a topical for skin
No disease claims: avoid products that make cure-or-prevention health claims — those claims aren't supported or legal

11. Your Genes & Gotu Kola

Key Takeaway

You don't need a genetic test for gotu kola. Interestingly, it has a low tendency to interfere with how your body processes medicines. One thing that does shape its effect is your gut bacteria, which switch its compounds into their active form.

There's no genetic test that guides gotu kola use, and you don't need one. A practical plus: a careful study found gotu kola has a low tendency to change the main liver enzymes that process medicines, so meaningful drug interactions through that route are unlikely. Wright KM, et al. J Pharm Sci. 2025. Open Source ↗

One genuinely interesting wrinkle is your gut: gotu kola's main compounds are converted by gut bacteria into the forms that are active in the body. That means a recent course of broad-spectrum antibiotics could temporarily blunt its effect. This is background biology rather than something most people need to act on. Gray NE, et al. Phytochem Rev. 2018. Open Source ↗

12. Traditional Roots

Key Takeaway

Gotu kola is a revered herb in Ayurvedic and Traditional Chinese medicine, valued as a "brain tonic" and for skin and longevity — and a traditional leafy food in Sri Lanka and Southeast Asia.

Gotu kola has deep roots in Asian tradition. In Ayurveda it's known as mandukaparni and prized as a "brain tonic" for memory and mental clarity, and for skin and wound care; in Traditional Chinese medicine it's jī xuě cǎo. It also has a long culinary life as a leafy green — for example in the Sri Lankan porridge kola kenda. Chandrika UG, et al. Adv Food Nutr Res. 2015. Open Source ↗

This long tradition is part of why people are interested in gotu kola — but tradition isn't the same as modern proof, which (as Section 6 explains) is encouraging in some areas and preliminary in others. Razali NNM, et al. 2023. Open Source ↗

13. Story Behind the Science

Key Takeaway

Gotu kola moved from traditional Asian medicine into European leg-vein preparations decades ago and, more recently, into the global "cica" skincare boom — with standardized extracts at the center of the modern research.

Gotu kola's modern story has two threads. In Europe, standardized triterpene extracts (sold under names like Madecassol) have been used for decades for skin and leg-vein support, and a standardized form is recognized in some European countries. More recently, gotu kola became a star of "cica" and K-beauty skincare, putting it in front of a global audience. European Medicines Agency (HMPC). EU herbal monograph: Centella asiatica. Open Source ↗

Through it all, the most reliable modern research has used standardized extracts rather than raw herb — a reminder that, with gotu kola, the specific preparation is a big part of the story. European Medicines Agency (HMPC). Centella asiatica assessment report. Open Source ↗

14. Lab Tests

Key Takeaway

There's no blood test for gotu kola itself. But if you use it for a while or have a liver concern, your provider may want to check liver tests — and if you take a blood-sugar medicine, keep an eye on your blood sugar.

Gotu kola isn't a nutrient, so there's no "gotu kola level" measured in clinical care, and you don't need one to use it. Razali NNM, et al. 2023. Open Source ↗

Where lab tests come in is through safety. If you use gotu kola for more than a few weeks — or you have a liver concern or take a medicine hard on the liver — your provider may check liver tests. And if you take a medicine for blood sugar, it's sensible to monitor your blood sugar, since gotu kola may affect it. LiverTox. NIDDK. Open Source ↗

✓ Last Reviewed: June 2026

Gotu Kola (Centella asiatica)

Technical Data

Clinical reference for healthcare professionals

CLINICAL SUMMARY

Gotu Kola (Centella asiatica)

Aerial parts of Centella asiatica (L.) Urban (Apiaceae), used orally (whole herb or a standardized triterpene fraction — TTFCA/TECA/ECa 233) and topically. Triterpene markers: asiaticoside, madecassoside, asiatic acid, madecassic acid. Proposed actions — collagen/extracellular-matrix support, microcirculatory, antioxidant — are best evidenced for leg-vein and skin/wound contexts; cognition and calming are preliminary. Preparations are not interchangeable.

Overall Evidence

WEAK–MODERATE

Primary Uses Studied

LOW–MODERATELeg-vein / microcirculation support · standardized TTFCA; 8-RCT systematic review + dose-ranging RCT (bias/single-group caveats)
LOW–MODERATESkin / wound repair · topical & oral; mechanistically strong, clinically heterogeneous
LOWCognition / mood · small RCTs + SR/MA; healthy elderly
LOWCalming / relaxation · single small acoustic-startle RCT + tradition

Standard Intake Range

Preparation-dependent (not interchangeable): whole-herb capsules 300–680 mg up to TID; standardized extract 60 mg 1–2×/day
Leg-vein (TTFCA/TECA): 60–120 mg/day (dose-dependent); cognition: extract 250–750 mg/day
Topical: ~1% extract. Not efficacy-validated label doses; not recommended <18; limit continuous oral courses

Key Safety Flags

🟠 CAUTION Liver problems / prior drug-induced liver injury / hepatotoxic co-medication — rare idiosyncratic liver injury (LiverTox likelihood C); avoid in active liver problems, monitor LFTs, limit duration
🔴 AVOID Pregnancy and lactation — traditional emmenagogue/abortifacient concern + insufficient data; not recommended
🟠 CAUTION Additive sedation with CNS depressants/alcohol; discontinue ~1–2 weeks pre-operatively
🟠 CAUTION May affect blood sugar — monitor with glucose-lowering agents
🟠 CAUTION Topical allergic skin reaction / photosensitivity; Apiaceae-family cross-reactivity
🟢 REASSURING Low CYP-mediated drug-interaction potential (no CYP1A2/2B6/3A4 induction)

Monitoring Quick-Ref

No gotu kola assay: there is no clinical reference interval — the herb itself is not measured
Liver tests (ALT/AST/bilirubin): with prolonged/high oral use, any liver concern, or hepatotoxic co-medication
Blood glucose: if co-used with glucose-lowering agents

⚠️ Lab Interference

Gotu kola has no direct assay interference and low CYP-interaction potential — it is not expected to alter measured drug levels appreciably. The clinically relevant effects are pharmacodynamic: liver tests may rise with the rare idiosyncratic injury, and blood glucose may shift when co-used with glucose-lowering agents. It is not a nutrient depleter; there is no assay for the herb itself.

Clinical bottom line: A food/herb with LOW–MODERATE evidence for leg-vein/microcirculation support (standardized TTFCA — Chong & Aziz SR, De Sanctis dose-ranging RCT) and skin/wound repair, and LOW evidence for cognition/calming. Key practical issues: rare idiosyncratic liver injury (avoid in active liver problems, limit duration, monitor LFTs, caution with hepatotoxic co-medication), dose-related sedation (additive with CNS depressants/alcohol; pre-operative discontinuation), blood-glucose monitoring with glucose-lowering agents, topical allergic skin reaction, and not-recommended status in pregnancy/lactation and under 18. Reassuringly low CYP drug-interaction potential. Product quality is a real concern (heavy-metal accumulation, frequent species mislabeling) — standardization and verified identity matter.

1. Chemical Identity & Forms

Key Takeaway

Centella asiatica (L.) Urban (Apiaceae), aerial parts. Marker triterpenes: asiaticoside, madecassoside (glycosides) and their aglycones asiatic acid and madecassic acid. Standardized fractions (TTFCA/TECA ≈ 40% asiaticoside + 30% asiatic + 30% madecassic acid; ECa 233 > 80% glycosides) differ from whole herb and from topical preparations.

Botanical name	Centella asiatica (L.) Urban
Family	Apiaceae (syn. Hydrocotyle asiatica)
Common names	Gotu kola, Indian pennywort, mandukaparni, "cica" / tiger grass
Part used	Aerial parts (leaf / herb)
Marker triterpenes	Glycosides: asiaticoside, madecassoside; aglycones: asiatic acid, madecassic acid
Standardized fraction (TTFCA / TECA)	≈ 40% asiaticoside + 30% asiatic acid + 30% madecassic acid
ECa 233 extract	> 80% triterpene glycosides
Other fraction labels	TTFCA, TECA, TTF, ETCA, CATTF
Forms	Whole herb, standardized extract, topical

Botanical identity. Centella asiatica (L.) Urban, family Apiaceae (syn. Hydrocotyle asiatica); aerial parts (leaf/herb). Common names include gotu kola, Indian pennywort, mandukaparni; in cosmetics, "cica"/tiger grass. Razali NNM, et al. 2023. Open Source ↗

Marker chemistry & standardization. The defining constituents are the triterpene glycosides asiaticoside and madecassoside and their aglycones asiatic acid and madecassic acid. The classic standardized fraction (labeled TTFCA, TECA, TTF, ETCA, or CATTF — the same extract) is set to ~40% asiaticoside plus ~60% aglycone acids (≈30% asiatic + 30% madecassic). A separate standardized extract, ECa 233, is >80% triterpenoid glycosides (madecassoside:asiaticoside ≈ 1.5:1). European Medicines Agency (HMPC). Centella asiatica assessment report. Open Source ↗

Forms & chemotype. Available as dried leaf/tea, whole-herb capsules, standardized oral extracts, and topical cosmeceuticals. Triterpene content varies widely by accession and growing conditions (chemotype switches), so whole herb, standardized fractions, and topicals are not interchangeable. Razali NNM, et al. 2023. Open Source ↗

2. Mechanism of Action

Key Takeaway

Triterpenes drive collagen/extracellular-matrix synthesis (TGF-β/Smad), modulate inflammation (NF-κB) and antioxidant defenses (Nrf2), and support microcirculation — the basis for skin/wound and venous use. Neurotropic effects (dendritic arborization) are largely preclinical.

Proposed mechanism	Pathway	Note
Collagen / extracellular-matrix synthesis	TGF-β / Smad	Mechanistic basis for skin and wound-repair interest
Inflammation modulation	NF-κB	Preclinical
Antioxidant defense	Nrf2	Preclinical
Microcirculation / venous tone	—	Basis for leg-circulation interest
Neurotropic (dendritic arborization)	Preclinical	Largely animal data

Connective tissue & skin. Asiaticoside, madecassoside, and asiatic acid promote fibroblast collagen synthesis and extracellular-matrix remodeling via TGF-β/Smad signaling, with anti-inflammatory (NF-κB) and antioxidant effects — the mechanistic basis for skin and wound-repair support. Legiawati L, et al. Evid Based Complement Alternat Med. 2020. Open Source ↗

Microcirculation & nervous system. Triterpenes support microvascular/venous tone (the basis for leg-circulation use). Preclinically, gotu kola constituents increase dendritic arborization and engage Nrf2-linked pathways, supporting structure/function interest in memory and a calm state — but these neurotropic effects are not established clinical outcomes. Gray NE, et al. Phytochem Rev. 2018. Open Source ↗

3. Pharmacokinetics (ADME)

Key Takeaway

The triterpene glycosides are poorly absorbed intact and are bioactivated to their aglycones (asiatic/madecassic acid) by gut microbiota. Plasma levels are low; nanocarrier strategies aim to improve bioavailability. Broad-spectrum antibiotics may reduce the gut conversion.

Absorption & bioactivation. Asiaticoside and madecassoside show low intact oral bioavailability; gut microbiota hydrolyze the glycosides to the active aglycones (asiatic acid, madecassic acid), so activity depends partly on the gut flora. A recent course of broad-spectrum antibiotics could transiently reduce this conversion. Gray NE, et al. Phytochem Rev. 2018. Open Source ↗

Distribution & elimination. Aglycones reach the systemic circulation with relatively rapid kinetics; overall low plasma/tissue levels and limited stability are recognized barriers, motivating phytosome and nanocarrier delivery to improve exposure. Human pharmacokinetic work on standardized products is emerging. Wright KM, et al. J Pharm Sci. 2025. Open Source ↗

4. Organ System Effects

Key Takeaway

Vascular/microcirculatory and integumentary effects have the most human support; CNS effects are largely preclinical. Note a hepatic paradox: animal models suggest a protective antioxidant effect, while human case reports describe rare idiosyncratic liver injury.

System	Area of interest	Evidence
Vascular / microcirculatory	Leg-vein circulation	Most human support
Integumentary / dermal	Collagen / extracellular-matrix for skin and wound repair	Human support
Hepatic	Paradox: animal protective vs. human rare liver injury	Human safety signal governs
CNS / neurotropic	Memory, calm	Preclinical or preliminary

Vascular & integumentary. The best-supported organ-level effects are microcirculatory/venous (leg-vein support) and dermal (collagen/extracellular-matrix support for skin and wound repair). Chong NJ, Aziz Z. Evid Based Complement Alternat Med. 2013. Open Source ↗

Hepatic paradox & CNS. Animal models report antioxidant, liver-protective effects, yet humans show rare idiosyncratic liver injury (Section 8) — the human safety signal governs clinically. CNS/neurotropic effects (memory, calm) remain preclinical or preliminary. Several disease-model findings appear in the literature; these are recorded as mechanism only and are not clinical claims. LiverTox. NIDDK. Open Source ↗

5. Intake / Dose Tiers

Key Takeaway

Doses are preparation-dependent and not regulatory efficacy endorsements. Whole-herb capsules 300–680 mg up to TID; standardized extract 60 mg 1–2×/day; leg-vein TTFCA 60–120 mg/day (dose-dependent); cognition extract 250–750 mg/day; topical ~1%. Standardization and route must match the intended use.

Form / use	Amount	Notes
Dried leaf / tea	~0.6 g leaf, or 5–10 g steeped	Traditional
Whole-herb capsules	300–680 mg, up to 3×/day	Product-variable
Standardized extract (general)	60 mg, 1–2×/day	—
Leg-vein support (TTFCA / TECA)	60–120 mg/day	Dose-dependent; 120 mg/day used safely
Cognition (extract / ECa 233)	250–750 mg/day	Greatest effect reported at 750 mg
Topical	~1% cream / ointment, ~twice daily	—

5A. Dose Tiers by Form/Indication (not efficacy-validated)

Dried leaf / tea: ~0.6 g leaf, or 5–10 g steeped (traditional).
Whole-herb capsules: 300–680 mg, up to 3×/day (product-variable).
Standardized extract (general): 60 mg once or twice daily.
Leg-vein support (TTFCA/TECA): 60–120 mg/day, dose-dependent (120 mg/day used safely).
Cognition: extract 250–750 mg/day (greatest effect reported at 750 mg); ECa 233 250–500 mg.
Topical: ~1% extract cream/ointment, applied roughly twice daily.

Administration & caveats. Courses typically run weeks to months; reassess by ~8–12 weeks. None of these is an efficacy-validated label dose, and standardization and route must match the intended use. Animal toxicity studies of a standardized extract were reassuring at high doses, but because human idiosyncratic liver injury has been reported at unknown doses, dose conservatively, limit continuous courses, and avoid in hepatic risk. Gohil KJ, et al. Indian J Pharm Sci. 2010. Open Source ↗ De Sanctis MT, et al. Angiology. 2001. Open Source ↗

Boundaries. Use in those under 18 is not recommended (insufficient data; a pediatric liver-injury case is on record), and use in pregnancy/lactation is not recommended (Section 10).

6. Clinical Evidence

Key Takeaway

Strongest (LOW–MODERATE) for leg-vein/microcirculation support with the standardized fraction; LOW–MODERATE for skin/wound repair; LOW for cognition/mood and calming. Trials are limited by small samples, varied preparations, single-group dominance, and unclear blinding. Disease-population endpoints are quarantined.

Leg-vein / microcirculation (best-supported). A systematic review of 8 RCTs found the standardized triterpene fraction improved microcirculatory measures and patient-reported leg heaviness, swelling, and discomfort. Caveats are substantial: most trials had unclear allocation/blinding, several gave no quantitative data, and much of the literature comes from a single research group — so certainty is capped at LOW–MODERATE. Chong NJ, Aziz Z. Evid Based Complement Alternat Med. 2013. Open Source ↗ A dose-ranging RCT confirmed a dose-dependent effect (120 > 60 mg/day). De Sanctis MT, et al. Angiology. 2001. Open Source ↗

Skin / wound repair. Topical and oral gotu kola are supported for skin/wound repair by controlled studies and mechanistic data, though preparations and endpoints are heterogeneous and samples modest. Legiawati L, et al. Evid Based Complement Alternat Med. 2020. Open Source ↗

Cognition/mood & calming. A systematic review/meta-analysis found gotu kola of interest for cognition and mood but on a small, heterogeneous base (LOW certainty). Puttarak P, et al. Sci Rep. 2017. Open Source ↗ A single small double-blind RCT found one dose attenuated an acoustic-startle response — a preliminary calming signal. Bradwejn J, et al. 2000. Open Source ↗ Disease-population endpoints from the broader literature are quarantined from structure/function claims. European Medicines Agency (HMPC). EU herbal monograph: Centella asiatica. Open Source ↗

7. Pharmacogenomics & Genetics

Key Takeaway

No actionable pharmacogenomic test. Notably, an aqueous extract showed no induction of CYP1A2, CYP2B6, or CYP3A4 in human hepatocytes — low PK-interaction potential. The relevant variable is the gut microbiome, which bioactivates the glycosides.

Gotu kola has no genotype-directed dosing. A favorable finding: an aqueous extract showed low potential for CYP-mediated interactions, with no induction of CYP1A2, CYP2B6, or CYP3A4 in human hepatocytes at relevant concentrations, so clinically meaningful pharmacokinetic interactions are unlikely at typical exposure. The more relevant modifier is the gut microbiome, which converts the triterpene glycosides to their active aglycones — meaning antibiotic-altered flora, more than any human gene, may change the response. Wright KM, et al. J Pharm Sci. 2025. Open Source ↗

8. Adverse Effects

Key Takeaway

Generally well tolerated short-term. Most AEs are mild (GI, dose-related sedation, topical skin reactions). The defining serious signal is rare idiosyncratic liver injury (LiverTox likelihood C), onset 3–8 weeks, typically reversible 1–2 months after stopping.

Effect	Frequency	Notes
Rare idiosyncratic liver injury	Rare (LiverTox likelihood C)	Onset 3–8 weeks; typically reversible 1–2 months after stopping; often with prolonged use; contamination could not be excluded in some cases
Mild stomach upset (nausea, abdominal discomfort)	Uncommon	—
Drowsiness / sedation	Dose-related	—
Topical skin reactions	With topical use	—

Liver injury (headline, rare). Clinically apparent idiosyncratic hepatocellular injury with jaundice has been reported (LiverTox likelihood score C); onset is typically 3–8 weeks, sometimes with autoimmune/immunoallergic features (ASMA/AMA), with resolution 1–2 months after stopping (± ursodeoxycholic acid). Reported cases often involved prolonged use or weight-loss products, and product contamination could not be excluded. LiverTox. NIDDK. Open Source ↗ Jorge OA, Jorge AD. Rev Esp Enferm Dig. 2005. Open Source ↗

Gastrointestinal, CNS & dermatologic. Mild GI effects (nausea, abdominal discomfort, flatulence, constipation) and dose-related drowsiness/sedation (occasionally dizziness, headache) are most common; sedation can be additive with CNS depressants and alcohol. Topical use can cause an allergic skin reaction (asiaticoside is a recognized contact allergen) and photosensitivity, though long-term topical use is otherwise generally well tolerated. Increased urinary frequency and possible Apiaceae-family cross-reactivity are also reported. Gohil KJ, et al. Indian J Pharm Sci. 2010. Open Source ↗ Haftek M, et al. Exp Dermatol. 2008. Open Source ↗

9. Drug Interactions

Key Takeaway

No well-documented severe interactions, and low CYP-interaction potential. The practical concerns are pharmacodynamic: additive sedation (CNS depressants/alcohol), additive blood-glucose effects (monitor), and additive hepatotoxicity caution. Broad-spectrum antibiotics may reduce bioactivation. Not a nutrient depleter.

9A. By Mechanism

Pharmacokinetic — low potential. An aqueous extract showed no induction of CYP1A2/2B6/3A4 in human hepatocytes, so meaningful PK interactions are unlikely at typical exposure. Pharmacodynamic — the real concerns. Additive CNS sedation with benzodiazepines, barbiturates, opioids, sedating antihistamines, anesthetics, and alcohol; possible additive blood-glucose lowering with glucose-lowering agents (monitor); and, given the idiosyncratic liver signal, prudent additive-risk caution with hepatotoxic agents (monitor liver tests). Wright KM, et al. J Pharm Sci. 2025. Open Source ↗ LiverTox. NIDDK. Open Source ↗

9B. Herb–Drug Interaction & Drug-Nutrient Depletion Table

Gotu kola is a food/botanical, not a nutrient depleter — no clinically meaningful nutrient depletion is established, and CYP-mediated interaction potential is low. The table summarizes the mainly pharmacodynamic herb→drug interactions.

Agent / class	Direction of effect when combined	Mechanism / severity
CNS depressants (benzodiazepines, barbiturates, opioids, sedating antihistamines, anesthetics) and alcohol	↑ sedation (additive)	additive CNS sedation — MODERATE; pre-operative discontinuation advised
Glucose-lowering agents	possible additive blood-sugar lowering — monitor	pharmacodynamic; monitor blood glucose
Hepatotoxic agents (e.g., acetaminophen, methotrexate, isoniazid, amiodarone)	↑ liver-injury risk (additive caution)	additive/idiosyncratic hepatotoxicity — monitor LFTs
CYP substrates (general)	interaction unlikely at typical exposure	no induction of CYP1A2/2B6/3A4 (reassuring)
Broad-spectrum antibiotics	may blunt gotu kola activity	reduced gut bioactivation of glycosides to aglycones
Dietary nutrients	no established depletion	gotu kola is a food/botanical, not a depleter

10. Cautions and Considerations

Key Takeaway

Avoid in pregnancy/lactation and under 18. Avoid in active liver problems; caution with prior liver injury or hepatotoxic co-medication (monitor LFTs, limit duration). Caution with sedatives/alcohol and pre-operatively; monitor blood glucose with glucose-lowering agents; avoid with Apiaceae allergy. Pregnancy/lactation: P-3 / T-U.

10A. When to Use Caution or Avoid

Liver problems / prior drug-induced liver injury / hepatotoxic co-medication — avoid in active liver problems; otherwise use with caution, monitor LFTs, and limit continuous duration (rare idiosyncratic injury, onset 3–8 weeks).
CNS depressants / alcohol — additive sedation; caution. Scheduled surgery — discontinue ~1–2 weeks before (additive sedation/anesthesia).
Glucose-lowering agents — may affect blood sugar; monitor blood glucose.
Apiaceae-family allergy / hypersensitivity — avoid (cross-reactivity).
Driving / operating machinery — caution given possible sedation.
Pediatric use — insufficient data; a pediatric acute-liver-failure case is on record — avoid.

10B. Pregnancy & Lactation

P-3 — Avoid (evidence insufficient) Lactation transfer: T-U (unknown)

Avoid oral use in pregnancy and lactation. There is no reliable human or animal safety dataset in pregnancy; combined with a traditional emmenagogue/abortifacient reputation and unquantified reproductive concern, this warrants precautionary avoidance rather than reassurance. For lactation, no transfer data exist (relative infant dose not calculable); avoid. Gohil KJ, et al. Indian J Pharm Sci. 2010. Open Source ↗

Routing: direct pregnancy questions to the OB or midwife, lactation and infant-exposure questions to the pediatrician, liver questions to the relevant specialist, and sedation/blood-glucose and interacting-medicine questions to the prescriber or pharmacist.

11. Combinations & Synergy

Key Takeaway

Oral + topical co-use is common for skin goals, and venous co-formulations exist. Watch "negative stacking": other hepatotoxic botanicals, additive sedatives, blood-sugar-lowering supplements, and unintended "double-brahmi" overlap with Bacopa. Isolated-constituent combinations are not simply additive.

11A. Common Combinations

Oral + topical gotu kola — used together for skin goals.
Venous co-formulations — gotu kola is sometimes combined with grape-derived (Vitis vinifera) extracts for microvascular support.

11B. Combinations to Approach with Caution (Negative Stacking)

Other hepatotoxic botanicals (e.g., kava, comfrey, high-dose green-tea-extract catechins) — avoid combining given the liver signal.
Sedative stacks (valerian, kava, melatonin, CBD) — additive drowsiness.
Blood-sugar-lowering supplements (berberine, bitter melon, fenugreek) — monitor blood glucose.
"Double-brahmi" — unintended overlap/additive sedation when combined with Bacopa monnieri (shared "brahmi" name).
Within-plant caveat — isolated triterpene + caffeoylquinic-acid combinations are not simply additive (a combination decreased dendritic arborization in one study).

Gohil KJ, et al. Indian J Pharm Sci. 2010. Open Source ↗

12. Lab Monitoring

Key Takeaway

No clinical assay for gotu kola — it is not measured directly. Monitoring is safety-driven: liver tests with prolonged/high oral use, any liver concern, or hepatotoxic co-medication; blood glucose with glucose-lowering agents.

12A. Monitoring

No clinical reference interval exists for gotu kola triterpenes; the herb is not a monitored analyte. Monitoring is directed at safety: check liver tests (ALT/AST/bilirubin) with prolonged or high oral use, any liver concern, or hepatotoxic co-medication (rare idiosyncratic injury, onset 3–8 weeks); and check blood glucose when co-used with glucose-lowering agents. LiverTox. NIDDK. Open Source ↗

12B. Lab Interference

Test	Interferent	Effect / mitigation
Liver tests (ALT/AST/bilirubin)	Gotu kola (idiosyncratic, prolonged/high use)	May be elevated with the rare injury; check with prolonged/high use, liver concern, or hepatotoxic co-medication
Blood glucose	Gotu kola (with glucose-lowering agents)	May shift; monitor blood glucose when co-used with glucose-lowering agents
Therapeutic drug levels (CYP substrates)	Gotu kola	Minimal expected interference — low CYP-interaction potential (no CYP1A2/2B6/3A4 induction)
Gotu kola / triterpene level	—	No clinical assay exists; the herb itself is not measured

13. Traditional Medicine

Key Takeaway

A revered herb in Ayurveda (mandukaparni, a "brain tonic") and Traditional Chinese medicine (jī xuě cǎo), with longstanding skin/wound and longevity uses, and a culinary role as a leafy green in South Asia.

In Ayurveda, gotu kola (mandukaparni) is classically a "brain tonic" for memory and mental clarity, and a skin and wound herb, with references in the Charaka tradition; in Traditional Chinese medicine it is jī xuě cǎo. It also has a strong culinary identity as a leafy green — notably the Sri Lankan porridge kola kenda — bridging food and medicine. These traditions inform modern interest but are distinct from controlled-trial evidence. Chandrika UG, et al. Adv Food Nutr Res. 2015. Open Source ↗

14. Quality Control

Key Takeaway

Gotu kola is a notable "dirty herb": it bioaccumulates heavy metals (cadmium, lead), is largely wild-harvested with conservation concern, and is frequently mislabeled or species-substituted. Standardization (% triterpenes), verified identity, and contaminant screening are the quality levers.

Contamination & adulteration. Gotu kola readily accumulates cadmium and lead from soil and carries microbial/debris quality risks; it is overwhelmingly wild-harvested (with over-collection/conservation concern, including IUCN-threatened status in parts of its range). DNA-based testing has found a large share of products mislabeled or substituted with look-alike species — in one study, ~36% of infusion samples and 100% of plant food supplements were adulterated by species substitution. Biltes R, et al. Food Biosci. 2025. Open Source ↗

Standardization & sourcing. Quality preparations are standardized to % triterpenes (or use a named standardized fraction such as TTFCA), verify species identity, and screen for heavy metals. Because triterpene content varies widely by chemotype and growing region, batch consistency and verified botanical identity are central to a reliable product. European Medicines Agency (HMPC). Centella asiatica assessment report. Open Source ↗

✓ Last Reviewed: June 2026