Quick Summary

Garcinia cambogia is an herbal supplement popularly used for weight loss, primarily due to its active compound hydroxycitric acid (HCA). Its effects on weight, body composition, lipid profiles, and appetite regulation have been evaluated in multiple randomized controlled trials and meta-analyses. Evidence indicates potential modest benefits on weight loss and lipid profile improvement, though clinical results are inconsistent. Concerns exist regarding safety, including reports of hepatotoxicity and other adverse effects. The current clinical evidence does not establish clear efficacy or definitive safety profiles, warranting cautious interpretation and further well-designed clinical studies.

What is it?

Garcinia cambogia is a tropical fruit also known as the Malabar tamarind, native to Southeast Asia and India. The fruit rind contains hydroxycitric acid (HCA), which is the primary compound believed to contribute to its metabolic effects. Garcinia supplements commonly contain extracts of this fruit’s rind and are marketed mainly for weight management.

Traditional Uses

Traditionally, Garcinia cambogia has been used in Asian cuisine for flavoring and as a natural preservative. It has also been used in traditional medicine systems for digestive support and to manage appetite, though scientific validation of these uses varies.

Active Compounds

  • Hydroxycitric acid (HCA) – the main active compound thought to influence metabolism and appetite regulation.
  • Other phytochemicals including polyphenols and organic acids are present but less studied.

Potential Benefits with Evidence Levels

  • Weight loss and reduction in obesity indices: Moderate evidence from systematic reviews and meta-analyses of randomized controlled trials shows statistically significant but modest reductions in body weight, BMI, fat mass, and waist circumference compared to placebo (Golzarand et al., 2020; Maunder et al., 2020; Tomar et al., 2019). Dose-response relationships have been observed, but the clinical significance remains limited.
  • Improvement in lipid profiles: Moderate evidence indicates Garcinia cambogia supplementation can significantly reduce total cholesterol and triglycerides and increase HDL cholesterol levels. These effects are more apparent with interventions longer than 8 weeks; no significant changes have been observed in LDL cholesterol (Amini et al., 2024).
  • Appetite regulation and satiety: Limited evidence suggests Garcinia extracts may have appetite-suppressant effects, although results from clinical trials are inconsistent and inconclusive (Serna et al., 2022; Stuby et al., 2019).
  • Reduction of serum leptin concentrations: Low to moderate evidence from meta-analysis of eight randomized controlled trials suggests Garcinia cambogia may reduce leptin levels; however, high heterogeneity among studies makes findings uncertain (Amini et al., 2024).
  • No significant improvement in glycaemic control or liver enzymes: Moderate evidence shows no significant effects on fasting blood sugar, insulin, or liver enzyme levels, though longer intervention duration may reduce insulin levels (Tavakoli et al., 2025).

Side Effects

Garcinia cambogia supplements are generally considered safe for short-term use in most adults. However, safety concerns have been reported, including:

  • Liver toxicity, including acute hepatitis and rare cases of acute liver failure (Kothadia et al., 2018; Phillips et al., 2024).
  • Serotonin toxicity and psychiatric effects such as mania, potentially related to herb-drug interactions (Bostock et al., 2018).
  • Gastrointestinal symptoms including nausea, vomiting, diarrhea, and constipation, although less frequent than with some pharmaceutical anti-obesity drugs (Takrori et al., 2025).

Drug Interactions

There is insufficient robust clinical data on specific drug interactions. However, concerns exist regarding potential interactions leading to serotonin toxicity and interference with other medications. Physicians should carefully screen and monitor patients using Garcinia cambogia supplements, especially if combined with serotonergic or hepatotoxic drugs.

Who Should Avoid It

Use of Garcinia cambogia supplements should be avoided or used with caution in:

  • Individuals with pre-existing liver disease or risk factors for liver injury.
  • Those with psychiatric disorders or history of serotonin syndrome.
  • People taking medications that may interact adversely with Garcinia, such as serotonergic or hepatotoxic drugs.
  • Pregnant or breastfeeding women due to lack of clinical safety data.

Evidence Limitations

  • Many clinical trials are small, short in duration, and have methodological limitations including poor reporting and conflicting results.
  • There is significant heterogeneity across studies in terms of formulations, dosages, duration, and participant characteristics.
  • Long-term safety data are lacking; adverse event reporting is often incomplete or inconsistent.
  • Most trial outcomes are surrogate markers; robust evidence for clinically meaningful endpoints such as sustained weight loss or morbidity reduction is limited.
  • Regulatory oversight for dietary supplements remains minimal, leading to variability in supplement quality and composition.

References

  • Amini MR et al. The effects of Garcinia cambogia on lipid profile: A systematic review and meta-analysis of randomized controlled trials. Phytother Res. 2024. doi:10.1002/ptr.8102.
  • Golzarand M et al. Effect of Garcinia cambogia supplement on obesity indices: A systematic review and dose-response meta-analysis. Complement Ther Med. 2020. doi:10.1016/j.ctim.2020.102451.
  • Kothadia JP et al. Hepatotoxicity Associated with Use of the Weight Loss Supplement Garcinia cambogia: A Case Report and Review of the Literature. Case Rep Hepatol. 2018. doi:10.1155/2018/6483605.
  • Tavakoli S et al. The effects of Garcinia cambogia on glycaemic control and liver enzymes in adults: a systematic review and meta-analysis of randomised controlled trials. 2025. doi:10.1017/jns.2024.91.
  • Bostock E et al. Mania Associated With Herbal Medicines, Other Than Cannabis: A Systematic Review and Quality Assessment of Case Reports. Front Psychiatry. 2018. doi:10.3389/fpsyt.2018.00280.
  • Phillips CA et al. A comprehensive review on the hepatotoxicity of herbs used in the Indian (Ayush) systems of alternative medicine. Medicine. 2024. doi:10.1097/md.0000000000037903.
  • Takrori E et al. Gastrointestinal Adverse Effects of Anti-Obesity Medications in Non-Diabetic Adults: A Systematic Review. 2025. doi:10.3390/medicina61111987.
  • Maunder A et al. Effectiveness of herbal medicines for weight loss: A systematic review and meta-analysis of randomized controlled trials. Diabetes Obes Metab. 2020. doi:10.1111/dom.13973.
  • Serna A et al. Effectiveness of a polyphenolic extract (Lippia citriodora and Hibiscus sabdariffa) on appetite regulation in overweight and obese grade I population: an 8-week randomized, double-blind, cross-over, placebo-controlled trial. Eur J Nutr. 2022. doi:10.1007/s00394-021-02678-x.
  • Tomar M et al. A clinical and computational study on anti-obesity effects of hydroxycitric acid. RSC Adv. 2019. doi:10.1039/c9ra01345h.
  • Amini MR et al. The effects of Garcinia cambogia (hydroxycitric acid) on serum leptin concentrations: A systematic review and meta-analysis of randomized controlled trials. Complement Ther Med. 2024. doi:10.1016/j.ctim.2024.103060.
  • Andueza N et al. Risks Associated with the Use of Garcinia as a Nutritional Complement to Lose Weight. Nutrients. 2021. doi:10.3390/nu13020450.
  • Li W, Wertheimer A. Narrative Review: The FDA’s Perfunctory Approach of Dietary Supplement Regulations Giving Rise to Copious Reports of Adverse Events. Innovations in Pharmacy. 2023. doi:10.24926/iip.v14i1.4989.
  • Woo SM et al. Herbal and dietary supplement induced liver injury: Highlights from the recent literature. World J Hepatol. 2021. doi:10.4254/wjh.v13.i9.1019.
  • Hassen G et al. Clinical Implications of Herbal Supplements in Conventional Medical Practice: A US Perspective. Cureus. 2022. doi:10.7759/cureus.26893.

Last Reviewed

June 2024

Disclaimer: This herb information database page is for educational purposes only and is not intended as medical advice. Consult a qualified healthcare professional before using Garcinia cambogia or any herbal supplement, especially if you have underlying health conditions or are taking other medications.