Hermetica Superfood Encyclopedia
The Short Answer
Gotu Kola's primary bioactive pentacyclic triterpenoids—asiaticoside, madecassoside, asiatic acid, and madecassic acid—exert neuroprotective effects by inhibiting acetylcholinesterase, upregulating synaptic plasticity proteins (BDNF, pCREB, pCaMKII), and reducing amyloid-beta accumulation in neurodegeneration models. In a clinical meta-analysis of 11 randomized controlled trials and a specific trial using 750–1,000 mg/day extract over six weeks in patients with vascular cognitive impairment, Centella asiatica supplementation produced measurable improvements in MoCA-Indonesia cognitive scores compared to controls.
CategoryHerb
GroupPacific Islands
Evidence LevelPreliminary
Primary Keywordgotu kola benefits
Gotu Kola — botanical close-up
Health Benefits
**Cognitive Function and Memory**
Asiaticoside and asiatic acid inhibit acetylcholinesterase (AChE), increasing synaptic acetylcholine levels and upregulating plasticity proteins including BDNF, pCREB, and PSD95, supporting learning and memory consolidation in both animal models and small human trials.
**Neuroprotection Against Neurodegeneration**
In PS/APP transgenic mouse models, Centella asiatica at 2.5 g/kg/day for 8 months significantly reduced amyloid-beta-40/42 accumulation, promoted amyloid-degrading enzymes neprilysin and insulin-degrading enzyme, and reversed mitochondrial deficits associated with Alzheimer's pathology.
**Wound Healing and Dermal Repair**
Asiaticoside stimulates collagen type I synthesis, promotes fibroblast proliferation, and accelerates epithelialization; topical formulations at 0.2–1.0% concentrations are clinically used for scar management, burn repair, and post-surgical wound care.
**Antioxidant Defense**
Triterpenoids and flavonoids (apigenin, rutin, quercetin) scavenge reactive oxygen species and upregulate endogenous antioxidant enzymes superoxide dismutase (SOD), catalase, and glutathione peroxidase, reducing measurable oxidative stress markers such as malondialdehyde (MDA) in preclinical studies.
**Circulatory and Microvascular Support**
The triterpenic fraction (60–120 mg/day) has demonstrated improvement in transcutaneous oxygen and carbon dioxide pressure (PO2-PCO2) in patients with venous hypertensive microangiopathy, indicating enhanced peripheral microcirculation and capillary integrity.
**Anti-Inflammatory Activity**
Madecassoside inhibits NF-κB signaling and reduces pro-inflammatory cytokine production (TNF-α, IL-1β, IL-6) in cellular and animal models, contributing to its traditional use in managing inflammatory skin conditions and systemic inflammation.
**Skin Aging and Photoprotection**
Rosmarinic acid, chlorogenic acid, and dicaffeoyl quinic acids in aqueous extracts provide UV-induced oxidative stress protection and inhibit matrix metalloproteinases (MMPs) responsible for collagen degradation, supporting anti-aging topical applications.
Origin & History
Natural habitat
Centella asiatica is native to the wetlands and tropical regions of Southeast Asia, including India, Sri Lanka, Indonesia, and Madagascar, as well as parts of the Pacific Islands and sub-Saharan Africa. It thrives in moist, shaded environments such as riverbanks, paddy fields, and forest margins, growing as a low-creeping perennial herb at elevations up to 1,800 meters. Traditionally cultivated across South and Southeast Asia for millennia, it remains a staple in Sri Lankan and Indonesian cuisine and is commercially harvested in India, China, and Madagascar for pharmaceutical and cosmetic industries.
“Centella asiatica has been documented in Ayurvedic medicine for over 3,000 years under the Sanskrit name 'Mandukaparni,' where it was classified as a medhya rasayana—a rejuvenating tonic for mind and nervous system—and prescribed for enhancing intellect, longevity, and treating leprosy and skin disorders. In Traditional Chinese Medicine (TCM), it appears in classical texts as 'Ji Xue Cao' and was used to treat traumatic injuries, jaundice, urinary disorders, and febrile conditions, reflecting its perceived multi-system therapeutic versatility. In Sri Lanka, it has been consumed daily as 'Gotu Kola sambol'—a fresh herb salad mixed with onion, chili, and lime—representing one of the oldest continuously maintained ethnopharmacological food traditions in the world. The herb also features prominently in Indonesian Jamu herbal medicine, Malay traditional healing, and Pacific Island ethnomedicine, where aqueous and fresh preparations were applied topically to wounds and ulcers and consumed as teas for nervous system complaints.”Traditional Medicine
Scientific Research
The clinical evidence base for Centella asiatica is growing but remains limited in scale: a meta-analysis of 11 randomized controlled trials (including 5 trials testing Centella alone, total n=215 subjects) found cognitive benefits, but the majority of included trials were small, heterogeneous in design, and reported limited quantified effect sizes, reducing overall confidence. A specific clinical trial in vascular cognitive impairment patients using 750–1,000 mg/day of standardized extract over six weeks demonstrated improvement in MoCA-Indonesia cognitive scores, though comparator outcomes with folic acid were similarly positive, complicating attribution of benefit. For venous hypertensive microangiopathy, the triterpenic fraction (60–120 mg/day) improved objective measures of transcutaneous PO2-PCO2 and subjective symptom scores, but published reports have not uniformly specified sample sizes or conducted intention-to-treat analyses. The strongest mechanistic data remain from animal studies—including dose-response memory improvements at 100–300 mg/kg in rodents and Aβ reduction in PS/APP transgenic mice—and robust human pharmacokinetic data supporting rapid tissue distribution and BBB penetration of asiatic acid.
Preparation & Dosage
Traditional preparation
**Standardized Extract (Capsule/Tablet)**
30–90 mg/day for general wellness; clinical trials have used 750–1,000 mg/day for cognitive support; standardized to contain 8–40% total triterpenoids (asiaticoside, madecassoside, asiatic acid, madecassic acid)
**Crude Dried Herb (Powder or Capsule)**
5–4 g/day, typically divided into two or three doses; traditional food-grade preparation consumed in Sri Lanka and Southeast Asia as fresh leaf salads or cooked vegetables
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**Triterpenic Fraction (Pharmaceutical Grade)**
60–120 mg/day used specifically for venous insufficiency and microangiopathy indications; this is a concentrated, purified extract formulation
**Aqueous Tea/Infusion**
250 mL hot water for 10–15 minutes; rich in chlorogenic and dicaffeoyl quinic acids with lower triterpenoid content than hydroalcoholic extracts
Traditional preparation using 1–2 teaspoons dried herb steeped in .
**Topical Serum or Cream**
Concentrations of 0.2–1.0% Centella extract applied directly to skin for wound healing, scar reduction, and anti-aging; madecassoside content is the primary active component in dermal formulations.
**Liquid Extract (Tincture)**
2–4 mL/day; retains broader phytochemical spectrum including flavonoids and phenolic acids
Hydroalcoholic extracts (1:1 to 1:5 ratio) used at .
**Timing Note**
No established timing requirement; consistent daily dosing over a minimum of 4–8 weeks is recommended to assess cognitive or vascular outcomes based on trial durations.
Nutritional Profile
Fresh Centella asiatica leaves contain approximately 2.4 g protein, 0.9 g fat, and 6.0 g carbohydrates per 100 g fresh weight, along with notable micronutrients including iron (5.6 mg/100g), potassium, calcium, magnesium, zinc, copper, manganese, cobalt, and sodium. Vitamin C and beta-carotene are present, contributing antioxidant nutritional value alongside the phytochemical matrix. Primary phytochemicals include pentacyclic triterpenoids—asiaticoside and madecassoside (C48H78O19/C48H78O20) and their aglycones asiatic acid and madecassic acid, each up to approximately 1% of dry weight—alongside anthocyanins (up to 37.6 mg/100 g), flavonoids (apigenin, rutin, quercetin), rosmarinic acid, and chlorogenic and dicaffeoyl quinic acids concentrated in aqueous extracts. Bioavailability of triterpenoids is relatively low from whole herb preparations due to glycosidic bonding, but metabolites MDA (madecassic acid) and ASA (asiatic acid) achieve higher plasma concentrations than their parent glycosides after intestinal hydrolysis, with peak distribution within 5–15 minutes post-dose for intravenous formulations; asiatic acid demonstrates confirmed blood-brain barrier penetration with a half-life of 2–4 hours.
How It Works
Mechanism of Action
The pentacyclic triterpenoids asiaticoside and asiatic acid act as antioxidants through direct free radical scavenging and by transcriptionally upregulating antioxidant enzymes SOD, catalase, and glutathione peroxidase, thereby reducing lipid peroxidation markers such as MDA in neural tissues. Asiatic acid penetrates the blood-brain barrier (half-life 2–4 hours) and inhibits acetylcholinesterase activity, elevating cholinergic neurotransmission, while simultaneously modulating synaptic plasticity through increased expression of PSD95, phosphorylated NR1 (pNR1), pCaMKII, pPKA, pCREB, and BDNF—proteins central to long-term potentiation and memory consolidation. In amyloid-related neurodegeneration, these triterpenoids decrease caspase-3-mediated apoptosis, upregulate amyloid-degrading enzymes neprilysin and insulin-degrading enzyme, and restore mitochondrial membrane potential, collectively attenuating Aβ-40/42 plaque burden. Madecassoside and asiaticoside also stimulate TGF-β1-mediated collagen type I synthesis in dermal fibroblasts and inhibit NF-κB-driven inflammatory cascades, providing dual wound-healing and anti-inflammatory actions in peripheral tissues.
Clinical Evidence
Clinical investigation of Gotu Kola has centered on cognitive enhancement and peripheral vascular outcomes, with the most structured evidence coming from a meta-analysis of 11 RCTs totaling approximately 215 subjects, which found statistically significant but incompletely reported cognitive improvements. The dosing range studied clinically spans 60 mg/day of triterpenic fraction for microvascular indications to 750–1,000 mg/day standardized extract for cognitive applications, with six weeks being the most common trial duration. Standardized MoCA-Indonesia scores improved in the vascular cognitive impairment trial, though folic acid controls showed similar improvement, suggesting potential non-specificity or additive confounding. Overall, confidence in results is moderate for circulatory applications and preliminary-to-moderate for cognitive outcomes, constrained by small sample sizes, short durations, lack of blinding details in some trials, and absence of large multicenter RCTs.
Safety & Interactions
Centella asiatica is generally regarded as safe at conventional supplemental and food-grade doses, with an established OTC use history; however, three documented cases of hepatotoxicity have been reported in the medical literature—including granulomatous hepatitis, chronic active hepatitis, and hepatic necrosis—all resolving upon discontinuation, necessitating caution in individuals with pre-existing liver disease or concurrent hepatotoxic drug use. Common side effects at higher doses include gastrointestinal upset (nausea, abdominal discomfort) and, in sensitive individuals, contact dermatitis with topical preparations; formal systematic safety data across diverse populations remain limited. Drug interaction data are largely absent from the published literature; theoretical interactions exist with sedative medications (additive CNS depression), hepatotoxic drugs (additive liver stress), and potentially with APOE4-genotype-dependent pharmacogenomics that have not been characterized. Centella asiatica is not recommended during pregnancy or lactation due to insufficient safety data, and individuals with a personal or family history of liver disease, those on immunosuppressants, or anticoagulant therapy should consult a healthcare provider before use; doses exceeding 1,000 mg/day of standardized extract should be medically supervised.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
PegaganBrahmi (regional conflation)Indian PennywortJi Xue CaoGotu Kola (Centella asiatica (L.) Urb.)Centella asiaticaMandukaparniCentella asiatica (Gotu Kola)Gotu Kola sambol herb
Frequently Asked Questions
What is gotu kola good for?
Gotu kola is primarily used for cognitive support, wound healing, and peripheral circulation. Its triterpenoids—asiaticoside, madecassoside, asiatic acid, and madecassic acid—inhibit acetylcholinesterase to enhance cholinergic neurotransmission, stimulate collagen synthesis for skin and wound repair, and improve microvascular oxygen exchange in venous insufficiency, with clinical evidence supporting these applications at doses of 60–1,000 mg/day depending on the indication.
How long does it take for gotu kola to work?
Based on the available clinical trial data, meaningful cognitive benefits in patients with vascular cognitive impairment were observed after six weeks of continuous supplementation at 750–1,000 mg/day of standardized extract. For wound healing and skin applications, topical use at 0.2–1.0% concentrations may show visible improvements in scar appearance and skin texture within 4–8 weeks, while vascular microangiopathy trials also used approximately 6-week protocols to measure transcutaneous oxygen pressure improvements.
Is gotu kola safe to take every day?
Gotu kola is generally considered safe for daily use at conventional doses (crude herb 1.5–4 g/day or standardized extract 30–90 mg/day), with a long history of food-level consumption in Sri Lanka and Southeast Asia. However, three published cases of hepatotoxicity—including granulomatous and chronic active hepatitis—have been documented with supplement use, all resolving upon discontinuation; individuals with liver disease, those on hepatotoxic medications, or anyone taking doses above 750 mg/day of extract should do so under medical supervision.
Does gotu kola help with memory and brain function?
Preclinical and early clinical evidence supports gotu kola's cognitive benefits: asiatic acid crosses the blood-brain barrier (half-life 2–4 hours) and inhibits acetylcholinesterase while upregulating BDNF, pCREB, and PSD95—proteins critical for memory consolidation. A meta-analysis of 11 RCTs including 215 subjects found cognitive improvements with Centella asiatica, and a six-week trial in vascular cognitive impairment patients using 750–1,000 mg/day showed improved MoCA-Indonesia scores, though evidence strength is currently rated as preliminary-to-moderate due to small sample sizes.
What is the difference between gotu kola and brahmi?
Gotu kola (Centella asiatica) and brahmi (Bacopa monnieri) are two distinct plant species that are commonly confused because both are called 'brahmi' in parts of India and both support cognitive function. Centella asiatica acts primarily through triterpenoid-driven AChE inhibition, antioxidant enzyme upregulation, and collagen synthesis, while Bacopa monnieri acts through bacosides that modulate serotonin and dopamine systems and reduce oxidative stress via distinct mechanisms; they are sometimes combined in Ayurvedic formulations for additive or synergistic cognitive benefit.
Is gotu kola safe during pregnancy and breastfeeding?
Gotu kola is traditionally used in some cultures during pregnancy, but clinical evidence is limited and safety data for pregnant and breastfeeding women is not well-established. It is advisable to consult a healthcare provider before using gotu kola during pregnancy or while breastfeeding to avoid potential risks.
Does gotu kola interact with medications like anticoagulants or sedatives?
Gotu kola may have mild anticoagulant properties and could theoretically interact with blood thinners like warfarin or antiplatelet medications, though clinical evidence is limited. It may also have mild sedative effects, so combining it with sedative medications or central nervous system depressants warrants medical supervision.
What form of gotu kola is most bioavailable—extract, powder, or fresh leaf?
Standardized extracts containing 10–20% asiaticoside (the primary active compound) generally offer higher bioavailability than raw powder or dried leaf, as extraction concentrates the active triterpenes. Clinical studies showing cognitive benefits typically use standardized extracts, making them the most evidence-supported form for consistent results.
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