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Gotu Kola supplement
Adaptogenic Herb

Gotu Kola — Research Profile

Evidence:Moderate
·

This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Gotu kola is an Ayurvedic brain tonic and wound-healing herb with evidence for anxiety reduction, cognitive...

Gotu kola is an Ayurvedic brain tonic and wound-healing herb with evidence for anxiety reduction, cognitive enhancement, and skin/wound repair. Standard dose is 500-1000mg standardized extract daily (or 1-2g dried herb).

Bottom line: Gotu kola uniquely supports both brain function and skin health. Take 500-1000mg extract daily for anxiety, cognition, and wound healing.

Evidence:RCT (2000) · n=40 · moderate confidence[#1]. See full reference list below.

Key Facts

What it is
A creeping herb (Centella asiatica) used in Ayurvedic and Chinese medicine as a brain tonic and wound healer
Primary benefits
  • Reduces anxiety and promotes calm
  • Enhances cognitive function and memory
  • Accelerates wound healing and collagen synthesis
  • Improves venous circulation
  • Neuroprotective properties
Typical dosage
500-1000mg standardized extract daily
Evidence level
Moderate
Safety profile
Generally Safe

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What the Research Says

Gotu kola has demonstrated potential benefits in cognitive function and wound healing. A randomized, placebo-controlled study by Wattanathorn et al. (2008) found that high-dose Centella asiatica improved working memory and mood in healthy elderly volunteers over a 2-month period. Additionally, Brinkhaus et al. (2000) reviewed multiple trials supporting the use of TECA extract for wound healing, highlighting its clinical efficacy.

Recent research has further explored Gotu kola's cognitive effects. Wightman et al. (2023) conducted a randomized, placebo-controlled trial involving 128 older adults and found that a multi-ingredient herbal supplement containing Gotu kola enhanced the speed of cognitive task performance. However, Phoemsapthawee et al. (2022) reported in a study of 60 older adults with mild cognitive impairment (MCI) that while multicomponent exercise alone or with Gotu kola improved cognitive function and reduced inflammation/oxidative stress, Gotu kola did not add significant cognitive benefits beyond exercise.

Safety considerations are important. Rare cases of hepatotoxicity have been reported, leading to recommendations for cyclic use rather than continuous long-term supplementation. This aligns with findings from Kaziulin et al. (2006), who observed improvements in patients with hepatic encephalopathy using a supplement containing bioactive substances, though Gotu kola was not the sole component.

Overall, Gotu kola shows promise in specific contexts, but its use should be guided by evidence and individual health profiles.

Benefits of Gotu Kola

  • Anxiety reduction — Bradwejn et al. (2000, n=40) showed a single 12g dose of gotu kola significantly reduced acoustic startle response (a validated anxiety measure) compared to placebo
  • Cognitive enhancement — Wattanathorn et al. (2008, n=28) found 750mg/day gotu kola extract improved working memory, mood, and calmness in healthy elderly subjects over 2 months
  • Wound healing — TECA (titrated extract of Centella asiatica) accelerates wound closure and collagen synthesis; multiple clinical trials support its use for surgical wounds, burns, and chronic ulcers (Brinkhaus et al., 2000 review)
  • Venous insufficiency — Cesarone et al. (2001, n=87) demonstrated TECA improved symptoms and microcirculation in chronic venous insufficiency patients
  • Neuroprotection — asiaticoside promotes neurite outgrowth and may protect against beta-amyloid toxicity in preclinical models (Soumyanath et al., 2005)
Did you know?

Gotu kola has demonstrated potential benefits in cognitive function and wound healing.

Forms of Gotu Kola

Gotu Kola supplement forms compared by bioavailability and best use
FormBioavailabilityBest For
TECA (Titrated Extract)HighWound healing and venous insufficiency — the most clinically studied standardized form
ECa 233 ExtractHighCognitive and anxiety — standardized to triterpenoid glycosides
Dried Herb PowderModerateTraditional Ayurvedic use in capsules or teas

Dosage Recommendations

General recommendation: 500-1000mg standardized extract (6% triterpenes) daily

Timing: Morning and evening; take with water on an empty stomach

Dosage by Condition

Anxiety
500mg extract twice dailyModerate
Cognitive enhancement
500-750mg dailyEmerging
Wound healing
60-120mg TECA daily (topical also effective)Moderate
Venous insufficiency
60-120mg TECA dailyModerate

Upper limit: 1000mg extract daily (higher doses increase liver toxicity risk)

Side Effects and Safety

Safety profile: Generally Safe

Potential Side Effects

  • Mild GI upset (nausea, stomach pain)
  • Headache and dizziness (uncommon)
  • Skin irritation with topical use (contact dermatitis)
  • Hepatotoxicity reported in rare cases with prolonged high-dose use
  • Drowsiness in some individuals

Drug & Supplement Interactions

  • May have additive sedative effects with anxiolytic and sedative medications
  • Potential hepatotoxicity risk — avoid combining with other hepatotoxic drugs
  • May interact with diabetes medications (blood sugar-lowering effects)
  • May enhance effects of diuretics
  • Cycle use (2-6 weeks on, 2 weeks off) to reduce hepatotoxicity risk
Check Gotu Kola interactions with other supplements →
BenefitsDosage GuideSide EffectsTypes & FormsResearchFAQ

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Frequently Asked Questions

Is gotu kola the same as brahmi?

In some Ayurvedic traditions, both gotu kola (Centella asiatica) and bacopa (Bacopa monnieri) are called "brahmi." However, they are completely different plants with different active compounds. In North Indian Ayurvedic tradition, brahmi typically refers to Bacopa monnieri, while in South Indian tradition, it may refer to gotu kola. To avoid confusion, use the botanical names. Both are medhya rasayanas (brain tonics) but work through different mechanisms.

Can gotu kola help with scars and stretch marks?

Gotu kola has the strongest evidence of any herb for wound healing and collagen synthesis. TECA extract has been shown to improve collagen formation and scar maturation in clinical trials [3]. For scars and stretch marks, both oral supplementation and topical application of centella-containing creams may be beneficial. Many commercial scar creams now include Centella asiatica extract as an active ingredient.

Evidence:Review (2000) · moderate confidence[#3]. See full reference list below.

Should I cycle gotu kola?

Yes, cycling is recommended due to rare reports of hepatotoxicity with prolonged continuous use. A common protocol is 4-6 weeks on, followed by 2 weeks off. Monitor for signs of liver stress (fatigue, dark urine, abdominal pain) and discontinue if they occur. This cycling approach is also consistent with traditional Ayurvedic practice.

What is the best form of Gotu Kola to take?

The best form of gotu kola depends on your specific health goals, absorption needs, and tolerance. Chelated and standardized extract forms generally offer higher bioavailability than raw or unstandardized versions. Check the product label for third-party testing to ensure potency and purity.

What are the proven benefits of Gotu Kola?

Gotu Kola has been studied for multiple health applications with varying levels of clinical evidence. The strongest evidence typically comes from randomized controlled trials and meta-analyses published in peer-reviewed journals. Individual responses can vary based on baseline status, dosage, and duration of use.

How much Gotu Kola should I take per day?

Gotu Kola dosage depends on the specific form, your health goals, and individual factors such as body weight and baseline nutrient status. Following the dose used in clinical trials is generally the most evidence-based approach. Starting at the lower end of the recommended range and adjusting upward is advisable.

When is the best time to take Gotu Kola?

Gotu Kola timing depends on whether it is fat-soluble or water-soluble and whether it causes digestive sensitivity. Consistency in timing is more important than the specific hour of the day. Taking supplements at the same time daily helps maintain steady levels.

What are the side effects of Gotu Kola?

Gotu Kola is generally well tolerated at recommended doses, with gastrointestinal discomfort being the most commonly reported side effect. Side effects are typically mild and dose-dependent, resolving with dose reduction or taking with food. Serious adverse effects are rare at standard supplemental doses.

Does Gotu Kola interact with any medications?

Gotu Kola may interact with certain prescription medications by affecting absorption, metabolism, or pharmacological effects. Always inform your healthcare provider about all supplements you take, especially before surgery or when starting new medications. Spacing supplements and medications by 2 hours reduces most absorption interactions.

Who should consider taking Gotu Kola?

Gotu Kola is most appropriate for individuals with confirmed deficiency, suboptimal levels, or specific health conditions supported by clinical evidence. People in higher-risk demographics, including older adults and those with restricted diets, may benefit most. Testing baseline levels before supplementing provides the best guidance.

How long does Gotu Kola take to show results?

Gotu Kola effects vary by the specific health outcome being targeted, with some benefits appearing within days and others requiring weeks to months of consistent daily use. Correcting a deficiency typically shows improvement within 2-4 weeks. A minimum 8-12 week trial at the recommended dose is advisable before evaluating effectiveness.

Is Gotu Kola safe for long-term daily use?

Gotu Kola is considered safe for long-term use at recommended doses based on available clinical data. Staying within established upper intake limits minimizes the risk of adverse effects over time. Periodic reassessment with a healthcare provider is recommended, especially if health conditions change.

Can you take too much Gotu Kola?

Exceeding the recommended dose of gotu kola increases the risk of adverse effects without providing additional benefit. Toxicity risk varies by form and individual factors such as kidney and liver function. Mega-dosing is not supported by clinical evidence and should be avoided.

Can I combine Gotu Kola with other supplements?

Gotu Kola can generally be combined with complementary supplements, though some combinations may affect absorption or create additive effects. Spacing different supplements by 1-2 hours can reduce absorption competition. Consulting a healthcare professional is advisable when combining multiple supplements targeting the same health pathway.

What should I look for when buying a Gotu Kola supplement?

Third-party testing from USP, NSF, or ConsumerLab is the most important quality indicator when purchasing gotu kola supplements. Look for products that clearly state the specific form, dose per serving, and any relevant standardization percentages. Avoid proprietary blends that hide individual ingredient amounts.

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References

  1. RCTBradwejn J, Zhou Y, Koszycki D, Shlik J (2000). A double-blind, placebo-controlled study on the effects of Gotu Kola (Centella asiatica) on acoustic startle response in healthy subjects. Journal of Clinical Psychopharmacology. DOI PubMed
  2. RCTWattanathorn J, Mator L, Muchimapura S, et al. (2008). Positive modulation of cognition and mood in the healthy elderly volunteer following the administration of Centella asiatica. Journal of Ethnopharmacology. DOI PubMed
  3. ReviewBrinkhaus B, Lindner M, Schuppan D, Hahn EG (2000). Chemical, pharmacological and clinical profile of the East Asian medical plant Centella asiatica. Phytomedicine. DOI PubMed
  4. RCTWightman E, Khan J, Smith E, Rolfe V, et al. (2023). Chronic supplementation of a multi-ingredient herbal supplement increases speed of cognitive task performance alongside changes in the urinary metabolism of dopamine and the gut microbiome in cognitively intact older adults experiencing subjective memory decline: a randomized, placebo controlled, parallel groups investigation.. Frontiers in nutrition. DOI PubMed
  5. RCTPhoemsapthawee J, Ammawat W, Prasertsri P, Sathalalai P, et al. (2022). Does Gotu kola supplementation improve cognitive function, inflammation, and oxidative stress more than multicomponent exercise alone? - a randomized controlled study.. Journal of exercise rehabilitation. DOI PubMed
  6. RCTCarlson JJ, Farquhar JW, DiNucci E, Ausserer L, et al. (2007). Safety and efficacy of a ginkgo biloba-containing dietary supplement on cognitive function, quality of life, and platelet function in healthy, cognitively intact older adults.. Journal of the American Dietetic Association. DOI PubMed
  7. RCTKaziulin AN, Petukhov AB, Kucheriavyĭ IuA (2006). [Efficiency of includes of bioactive substances in diet of patient with hepatic encephalopathy].. Voprosy pitaniia. PubMed