Gotu Kola Side Effects: Dangers and Contraindications

Does gotu kola (Centella asiatica) cause side effects? Most often, no, or only minor discomfort: mild drowsiness, occasional headaches, digestive discomfort early in a cure. But there is a more serious point of caution, documented by published pharmacovigilance cases: rare liver injuries associated with products based on this herb, with a mechanism and course now well described in the literature.

This article details what the reported cases actually show, without minimizing or dramatizing them. For the benefits and dosage, see our page gotu kola: skin, circulation and calm; for a broader overview of general precautions, our article gotu kola dangers complements this page.

The most common side effects remain mild

• Mild drowsiness: the most commonly reported effect, consistent with the calming action traditionally attributed to the plant. It generally eases after a few days or by reducing the dose.
• Headaches: occasional, especially at a high dose.
• Digestive upset: mild nausea or stomach discomfort, particularly on an empty stomach.
• Skin reactions with external use: rare contact dermatitis with centella-based creams or oils.

For the vast majority of users, these effects remain moderate and reversible on stopping or lowering the dose.

The documented case: three hepatitis cases in Argentina

This is the reference study on the question. Jorge and Jorge, in a 2005 article published in the Revista Española de Enfermedades Digestivas, described three cases of hepatitis in Argentine women aged 49, 52 and 61 who had taken Centella asiatica tablets for weight loss. Jaundice appeared after 20 to 60 days of use, with liver enzymes (ALT) rising above 1,600 U/L and bilirubin reaching nearly 20 mg/dl in one patient. Liver biopsies showed granulomatous hepatitis with marked necrosis, with progression to cirrhotic transformation in one case. The good news: stopping the herb, combined with ursodeoxycholic acid treatment, led to complete resolution within one to two months (see the study on Google Scholar).

Three important nuances put this risk in perspective: these cases remain exceptional relative to the volumes of gotu kola consumed worldwide, particularly in cooking (raw leaves in salads across Southeast Asia); the use involved was concentrated and prolonged, not an occasional infusion; and the outcome, once the herb was stopped, was favorable in all three cases. This justifies real vigilance, not panic.

Who should be especially careful with their liver?

Situation	What the literature shows	What to do
Known liver disease	Documented hepatitis cases with concentrated tablets	Avoid the herb or seek systematic prior medical advice
Prolonged concentrated cure	The reported cases involved several weeks of continuous use	Limit cure length (4 to 8 weeks), then take a break
Concurrent liver-affecting treatment	Plausible cumulative risk, not formally documented	Mention gotu kola use to your doctor or pharmacist
Unusual symptoms during a cure	Intense fatigue, jaundice, dark urine: liver warning signs	Stop immediately and see a doctor

Pregnancy and breastfeeding: caution remains the rule

Gotu kola is discouraged during pregnancy and breastfeeding. Safety data for this population are insufficient to rule out a risk, and there is no reason to take an avoidable risk during this period. Use should only be considered on the explicit advice of a healthcare professional.

Interactions and other populations to watch

• Sedatives and alcohol: gotu kola's calming effect can add to that of these substances.
• Scheduled surgery: as a general precaution, stop use about two weeks before a procedure.
• Product quality: gotu kola grows in wetland areas that are sometimes polluted; an extract with a certificate of analysis limits the risk of heavy-metal contamination, in addition to guaranteeing an active-compound content consistent with the stated dose. Our guide how to choose Ayurvedic supplements details the criteria to check.

Not to be confused with brahmi (Bacopa monnieri), sometimes sold under the same label: the two herbs have different caution profiles — see our comparison brahmi vs gotu kola.

When to stop and see a doctor

Stop use and seek medical advice in case of intense fatigue, jaundice, dark urine, or any sign suggesting liver injury. Gotu kola never replaces a prescribed treatment or medical follow-up. General precaution guidelines for Ayurvedic herbs are detailed in our safety and precautions guide.