Gotu Kola: Dangers, Side Effects and Contraindications
Gotu kola has a gentle reputation, but it still has real side effects and one liver-related contraindication worth knowing. Here is the picture — without dramatizing or minimizing.
Key facts
- Gotu kola is well tolerated by most adults; mild drowsiness, headache and stomach upset are the common side effects.
- Its one serious risk is rare liver injury: three women developed hepatitis after 20 to 60 days of use, and one relapsed when she took it again (Jorge and Jorge, 2005).
- Avoid internal use with liver disease, during pregnancy and breastfeeding, and ask a doctor first if you take sedatives or liver-straining medicines.
- The best-studied dose is 60 mg of a standardized triterpene extract twice a day for 8 weeks, used in a randomized placebo-controlled trial on venous swelling (Cesarone et al., 2001).
- Gotu kola (Centella asiatica) is often sold as brahmi, a name also used for Bacopa monnieri: check the Latin name.
In this article 7 sections
Gotu kola (Centella asiatica) is safe for most adults at usual doses, with mild drowsiness, headache or stomach upset as the common side effects; its one serious risk is rare liver injury. Avoid it if you have liver disease, during pregnancy and breastfeeding (internal use), and ask a doctor first if you take sedatives or medicines that strain the liver. Stop at once if you notice yellow skin or eyes, dark urine or unusual fatigue.
One labeling trap comes first: gotu kola is often sold as “brahmi”, a name also used for bacopa. Check the Latin name. Benefits and traditional uses are in our main page on gotu kola; this page covers safety, pregnancy and dosage.
What are the side effects of gotu kola?
- Mild drowsiness: the effect most often mentioned when starting, consistent with its traditional use as a calming herb. It usually eases within days or with a lower dose.
- Headache: occasional, mostly at higher doses.
- Nausea or stomach discomfort: more likely on an empty stomach; taking it with food helps.
- Skin reactions to creams and oils: contact dermatitis has been reported with centella cosmetics; patch-test a new product.
In the best-known clinical trial of a standardized extract, described in the dosage section below, no side effects were recorded over 8 weeks. These effects are reversible once you lower the dose or stop.
Gotu kola and the liver: the precaution that matters most
The reference case series is Jorge and Jorge (2005, Revista Española de Enfermedades Digestivas). Three women aged 49, 52 and 61 developed jaundice after 20, 30 and 60 days of taking Centella asiatica. Liver enzymes rose sharply (ALT up to 1,694 U/L), and biopsies showed granulomatous hepatitis, with cirrhotic changes in one patient. All three improved after stopping the herb and receiving ursodeoxycholic acid. Two details make the link more convincing: one woman took gotu kola again and the liver damage came back, and the authors point to an immune-type reaction.
Keep it in proportion: this is a case series, not a measure of how often it happens, and gotu kola leaves are eaten as a vegetable across Southeast Asia without such reports. But a positive re-challenge is strong evidence for an individual reaction, which is why:
| Situation | What to do |
|---|---|
| Known liver disease, or past liver reaction to any supplement | Avoid internal use |
| Medicines that can affect the liver (high-dose acetaminophen/paracetamol, methotrexate, some antifungals, statins, isoniazid…) or regular alcohol | Ask your doctor first; the combined risk is not studied but plausible |
| Concentrated capsules or extracts taken for weeks | Limit courses to 4 to 8 weeks, then pause |
| Yellow skin or eyes, dark urine, pale stools, itching, marked fatigue or loss of appetite | Stop immediately and see a doctor; mention the supplement and keep the pack |
Interactions and other precautions
- Sedatives, sleeping pills, alcohol: a calming herb may add to their effect. No interaction has been measured in people; be careful driving if you feel drowsy.
- Long-term medication: ask a doctor or pharmacist before combining, especially with drugs acting on the liver or nervous system.
- Surgery: as with most active herbs, stop about two weeks before a planned procedure and tell the surgical team.
- Children: no internal use without medical advice.
- Product quality: centella grows in wet, sometimes polluted ground and, like many leafy plants, can take up metals from soil and water. Choose a product with a heavy-metal certificate of analysis for the batch; our guide on choosing Ayurvedic supplements lists the checks.
Gotu kola in pregnancy and breastfeeding
No clinical study has tested internal gotu kola in pregnant or breastfeeding women, and animal data are limited. What has not been studied in pregnancy is presumed to be avoided, not presumed safe. Topical centella creams, common in stretch-mark routines, are a different situation because very little is absorbed.
| Use | During pregnancy or breastfeeding |
|---|---|
| Cream or serum on the skin | Common and generally well tolerated; patch-test first |
| A leaf eaten occasionally as food | Not known to be a problem in normal food amounts |
| Tea, powder, capsules, extracts | Avoid, unless your doctor or midwife advises otherwise |
For heavy legs in pregnancy, walking, leg elevation and compression stockings advised by your midwife come first; see our guide to Ayurveda during pregnancy. One-sided leg swelling, warmth or pain needs prompt medical attention.
Gotu kola or brahmi: two different herbs
| Gotu kola | Brahmi (bacopa) | |
|---|---|---|
| Latin name | Centella asiatica | Bacopa monnieri |
| Traditional use | Skin, circulation, calm mind | Memory, learning |
| Main precaution | Liver, pregnancy | Digestive upset, drowsiness, thyroid medication |
Never assume one herb's safety profile applies to the other. Our comparison brahmi vs gotu kola and the page on brahmi dangers go further.
How much gotu kola to take
The best-studied form is a standardized extract of its triterpenes (total triterpenic fraction, TTFCA). In a prospective, placebo-controlled, randomized trial (Cesarone et al., 2001, Angiology), 40 people with severe venous hypertension and ankle swelling took 60 mg of TTFCA twice a day for 8 weeks or a placebo; ankle swelling and capillary filtration decreased in the treated group, and no side effects were observed. That trial concerned one extract for one problem (heavy, swollen legs), not memory or skin.
| Form | Usual amount, for guidance | Note |
|---|---|---|
| Standardized triterpene extract (TTFCA or similar) | 60 to 120 mg a day, in 2 doses | The amount used in the venous trials |
| Dried whole-plant powder | 1 to 3 g a day | Traditional use, in warm water, with food |
| Dried-leaf tea | 1 to 2 teaspoons per cup | Grassy, slightly bitter |
| Cream or serum | 1 to 2 applications a day | Clean skin, away from eyes and mucous membranes |
Take oral forms with meals to limit stomach upset. Judge the effect over the length of the trials, about 4 to 8 weeks (see how long gotu kola takes to work), then pause rather than continuing indefinitely; the liver cases appeared after 20 to 60 days of continuous use. Do not exceed the label dose, and do not combine several gotu kola products.
The rules that apply to every Ayurvedic herb are in our safety and precautions guide.
Your questions about gotu kola
Can gotu kola make you drowsy or give you a headache?
Yes — mild drowsiness and headaches are reported, especially when starting out or at high doses. These effects usually ease with a lower dose and resolve after a few days of adjustment.
Can pregnant women take gotu kola?
No. Pregnancy and breastfeeding are periods to avoid as a precaution: the available safety data are insufficient to rule out a risk. Only explicit medical advice could justify an exception.
Are gotu kola and brahmi the same herb?
No, despite frequent confusion. Gotu kola is Centella asiatica; brahmi is Bacopa monnieri — two herbs with different precaution profiles, sometimes sold under the same "brahmi" name. Always check the botanical name on the label.
Can gotu kola be combined with other medications?
Only after checking with a doctor or pharmacist, particularly for sedative or liver-affecting drugs, or any long-term treatment. Gotu kola’s calming effect can add to that of certain medications and alcohol.
How long before surgery should you stop gotu kola?
As a general precaution that applies to most active herbs, stop taking it about two weeks before a scheduled procedure, and mention it to your surgical team.
Can gotu kola really harm the liver?
Yes, in rare documented cases: a 2005 case series described three women who developed hepatitis after taking Centella asiatica for 20 to 60 days; all improved after stopping, and one relapsed when she took it again. These cases are rare but justify caution with prolonged use, especially with liver disease.
What warning signs should you watch for?
Unusual, intense fatigue, jaundice (yellow skin or eyes), dark urine: these are the signs reported in hepatitis cases associated with gotu kola. If any of these appear during a cure, stop use immediately and see a doctor.
How long can you take gotu kola without risk?
The documented liver-injury cases involved concentrated use over several weeks. As a precaution, it is better to limit cures to 4 to 8 weeks, with a break afterward, rather than continuous prolonged use without interruption.
How much gotu kola should you take?
For guidance, the standardized triterpene extract used in clinical trials was taken at 60 mg twice a day; traditional powder is used at 1 to 3 g a day with food. Follow the label, do not combine several products, and pause after 4 to 8 weeks.
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