The standard daily dose of gotu kola depends on the form you’re taking. For standardized extracts, the most commonly studied range is 60 to 120 mg per day. For crude (whole herb) powder or dried leaf, doses in clinical research have ranged from 750 mg to 4 grams per day. These numbers vary widely because “gotu kola supplement” can mean very different things depending on how concentrated the product is.
Standardized Extract vs. Raw Herb Powder
This distinction matters more than any other detail when figuring out your dose. A standardized extract is concentrated to contain a specific percentage of gotu kola’s active compounds, a group of triterpenoids that include asiaticoside, asiatic acid, and madecassoside. These are the compounds responsible for most of the herb’s studied effects on circulation, wound healing, and brain function. When research references 60 to 120 mg per day, it means this type of concentrated extract.
Raw herb powder, sometimes labeled as “whole herb” or “dried leaf,” contains a much smaller percentage of those active compounds. That’s why clinical trials using non-concentrated forms have used much higher amounts, typically 750 mg to 1,000 mg per day for cognitive benefits, and up to 4 grams per day in some research settings. If your supplement label lists a large milligram amount (say, 500 mg per capsule) and doesn’t mention standardization or triterpenoid content, you’re almost certainly taking a whole-herb product, not a concentrated extract.
Doses Used in Clinical Trials
The most robust clinical data comes from studies on circulation. In trials involving people with chronic venous insufficiency or diabetic blood vessel problems, participants took 60 mg of the concentrated triterpenoid extract two to three times daily, for a total of 120 to 180 mg per day. Treatment lasted anywhere from four weeks to six months.
For cognitive function, the doses have been higher but used less concentrated forms. In a randomized controlled trial of healthy older adults, 750 mg per day of gotu kola extract for two months improved working memory. A larger study of 99 post-stroke patients with cognitive impairment tested 750 and 1,000 mg per day for six weeks and found improvements in cognitive scores at both levels. A smaller phase 1 study found that a single dose of 250 or 500 mg of a standardized extract increased blood levels of choline, a nutrient important for brain signaling.
For wound healing, one trial in diabetic patients used 100 mg of asiaticoside (a specific active compound) three times daily, totaling 300 mg per day, and saw improved healing and reduced scarring compared to placebo.
How to Read the Label
Check for two things: the total milligrams per serving and whether the product is standardized to a percentage of triterpenoids. A product standardized to, say, 40% triterpenoids at 150 mg per capsule delivers 60 mg of active compounds per capsule. A 500 mg capsule of raw powdered leaf might deliver only a fraction of that.
If the label says “total triterpenic fraction of Centella asiatica” (sometimes abbreviated TTFCA), you’re looking at a concentrated, standardized product. For these, 60 to 120 mg per day is the well-studied range. If it’s a whole-herb capsule, you’ll likely need 750 to 1,000 mg per day to match what’s been used in cognitive research, though the evidence for whole-herb dosing is thinner overall.
How Long You Can Take It
Most sources recommend using gotu kola for two to six weeks at a time, then taking a two-week break before starting again. This cycling approach is a precaution rather than something established by large safety trials. The clinical studies that ran longest used concentrated extracts for up to six months, but these were conducted under medical supervision with regular monitoring.
Side Effects and Safety Concerns
Gotu kola is generally well tolerated at the doses described above, but liver damage is the most serious risk to be aware of. Case reports have documented acute liver failure following gotu kola use, including one case in a 15-year-old who took a product purchased online. These cases are rare, but they underscore why cycling on and off is commonly recommended and why people with existing liver conditions should be cautious.
Milder side effects can include stomach upset, nausea, and headache. Because gotu kola may have mild sedative properties, it could amplify the effects of other calming supplements or medications. If you’re taking anything that affects the liver or has sedative effects, the interaction risk goes up.
Quick Reference by Form
- Standardized extract (triterpenoids/TTFCA): 60 to 120 mg per day, split into two or three doses
- Whole herb powder or dried leaf: 750 to 1,000 mg per day for cognitive support; up to 1.5 to 4 grams per day referenced in some sources
- Duration: 2 to 6 weeks on, 2 weeks off
The most important step is identifying what type of product you have. A standardized extract at 120 mg per day and a whole-herb powder at 1,000 mg per day may deliver similar amounts of active compounds, but taking 1,000 mg of a concentrated extract would far exceed any studied dose. Always check whether your product specifies triterpenoid content before settling on a number.