Do ayurvedic, Patanjali or homeopathic weight-loss medicines work?

What does the research say about Ayurvedic and herbal weight-loss medicines?

A 2020 review of 54 trials found no herbal medicine worth recommending for weight loss. Most trials were small, short or poorly reported.

Researchers pooled 54 trials that compared herbal medicines with a dummy pill (placebo) in adults with overweight or obesity.¹ They set 2.5 kg as the smallest difference that matters to health.¹ In the pooled results, no single herb beat the dummy pill by that much.¹

Garcinia cambogia and green tea showed no effect, and white kidney bean gave too small a loss to matter.¹ An earlier review of garcinia found 0.88 kg more loss than a dummy pill.⁸ In one of its trials, stomach side effects were twice as common on garcinia.⁸

Trials of two herbs used in Ayurveda, Sphaeranthus indicus (mixed with Garcinia mangostana) and Cissus quadrangularis, reported meaningful losses.¹ But each had 3 trials or fewer, mostly of poor quality, and most trials lasted 12 weeks or less.¹ The reviewers said the results should be read with caution.¹

Indian trials exist too. A 1990 trial gave 70 people with obesity Ayurvedic treatments or a dummy pill for 3 months. It reported more weight loss on the treatments.⁹ Its summary gives no kilogram figures, and it was small and short.⁹

India's obesity guideline, from the Endocrine Society of India (ESI 2025), lists the medicines doctors can use. It includes no herbal product.¹⁰

Is there evidence for Patanjali's weight-loss tablets?

We found no published trial in people of a Patanjali weight-loss product. The two studies we found, both by Patanjali's own scientists, were lab studies, not trials in people.

On 5 October 2026 we searched the Europe PMC research database by product name and by the company's lead researcher.¹¹ We found yoga studies and cell and animal work, but no randomised trial of a weight tablet in people.¹¹

In 2022, Patanjali Research Institute scientists published a study of Divya-Medohar-Vati.¹² They tested it on a fat-digesting enzyme (pancreatic lipase) and on lab-grown gut cells, and called it an effective anti-obesity formulation.¹² The study used lab tests only.¹²

In 2023, the same institute published a study of a formulation called Divya-WeightGo.¹³ It was tested in lab cells and in mice fed a high-fat diet, not in people.¹³

What does an Ayurvedic drug licence prove? India's licensing rules set different bars for Ayurvedic, Siddha and Unani medicines.² A classical formulation follows a recipe from an approved text. For its textbook use, it needs published literature, but no safety study and no proof that it works.² A classical formulation used for a new purpose needs proof of effectiveness, and a patent or proprietary mix needs a pilot study.²

In our searches, we could not find which of these categories Patanjali's weight products are licensed under. We also found no published pilot study of them.¹¹ A licence number on a pack shows the maker is licensed, not that the product works for weight.²

Do homeopathic weight-loss medicines work?

No reliable evidence shows homeopathy works for any health condition. Australia's national medical research council reached that verdict after reviewing 176 studies.

In 2015, Australia's National Health and Medical Research Council (NHMRC) assessed 57 systematic reviews covering 176 studies.¹⁴ It found no health condition with reliable evidence that homeopathy works.¹⁴ It said homeopathy should not be used for conditions that are long-term, serious or could become serious.¹⁴

Weight trials are few. In a 2002 German trial, 208 hospital patients on a fasting programme took one dose of a homeopathic remedy (Thyroidinum 30C) or a dummy pill.¹⁵ Two days later the remedy group had lost slightly less weight, 92 g less on average.¹⁵ After the authors allowed for differences at the start, the gap was no longer significant.¹⁵

In India, homeopathy sits under the Ayush Ministry. The Ayush Suraksha portal passes complaints about misleading Ayush ads to bodies including the National Commission for Homoeopathy.⁷ The 1954 ad law covered below defines a drug as including any medicine for internal or external use, not just modern medicines.⁶

India's homeopathy research council. The Central Council for Research in Homoeopathy (CCRH), part of the government's Ayush department, published a leaflet on obesity. The copy we opened dates from January 2013.¹⁶ It says homeopathic medicines "can help you lose weight" and that 189 remedies are "indicated for obesity".¹⁶ It lists 7 commonly used ones, including Thyroidinum, the remedy in the German trial above. It cites no trial or study for these claims.¹⁶

A US example. In 2011 two US regulators, the FDA and the FTC, warned 7 companies selling "homeopathic" HCG drops, pellets and sprays for weight loss.¹⁷ The FDA said there was no good evidence HCG added anything to the very-low-calorie diet their labels told buyers to follow.¹⁷ This was a US action.

Is berberine "nature's Ozempic"?

No. Across 23 studies, people on berberine lost 0.88 kg more on average than comparison groups, far less than in GLP‑1 trials.

Berberine is a substance found in barberry and other plants, long used in Ayurvedic and Chinese medicine.⁴ It is commonly called "nature's Ozempic", but there is no conclusive evidence that it works like a GLP‑1 medicine.²¹ (What GLP-1 stands for; how semaglutide and Ozempic relate.)

A 2026 review pooled 23 studies and found an average extra loss of 0.88 kg.³ Its authors asked for better trials, with blinding and checks on purity and dose.³ A US government health agency (NCCIH) calls the evidence "not conclusive". It says many studies had a high risk of bias.⁴

Side effects include nausea, stomach pain, bloating, constipation and diarrhoea.⁴ Berberine can interact with medicines, such as cyclosporine, a transplant drug.⁴ It is likely unsafe for babies and may be unsafe in pregnancy or breastfeeding.⁴

For contrast, look at the STEP 1 trial of semaglutide 2.4 mg (sold as Wegovy). People lost 14.9% of their weight over 68 weeks, against 2.4% on a dummy injection.²² For a 90 kg person, that is about 13 kg versus about 2 kg (what the GLP‑1 trials found). These were different trials in different people, so this is a rough contrast, not a head-to-head test.

When is weight a medical problem for Indians, and what do guidelines suggest?

For Indian adults, a BMI of 23 to 24.9 counts as overweight and 25 or more as obesity, under India's 2009 consensus.²⁴

Asian Indians tend to have more body fat and belly fat, so India's consensus sets a lower normal BMI range.²⁴ A waist of 90 cm (35.4 inches) or more in men, or 80 cm (31.5 inches) in women, marks too much belly fat.²⁴ Weight and health in Indians explains these numbers.

ESI 2025 says medicines don't replace diet changes and regular exercise.¹⁰ It says a doctor may consider medicines at a BMI above 27, or above 25 with a weight-related condition.¹⁰ That is a point to start a conversation, not a sign that you qualify.

Our guide to your options, and where medicines fit sets lifestyle change, medicines and surgery side by side.

Are Ayurvedic and herbal weight products safe to try?

Not automatically. Some Ayurvedic products contain toxic metals, and traditional medicines caused 14% of drug-related liver injury cases in an Indian network.

In 2005, US researchers ordered Ayurvedic medicines from websites and tested the 193 that arrived for metals.²⁵ About 1 in 5 (20.7%) contained lead, mercury or arsenic, at similar rates for Indian-made and US-made products.²⁵ Every product with metals went over at least one daily safety limit.²⁵ Of those products, 95% were sold by US websites, so this is not a survey of Indian shops today.²⁵

Products made by rasa shastra, which combines herbs with metals and minerals, contained metals more often: 40.6% vs 17.1%.²⁵

In India's network that tracks liver damage from medicines, traditional and complementary medicines caused 14% of 1,288 cases.⁵ They also caused 72% of cases where a medicine tipped existing liver disease into sudden failure (acute-on-chronic liver failure).⁵

Slimming products can also hide real drugs. The US FDA warns that many diet pills, fat-burning pills and slimming teas are likely to contain hidden ingredients.²⁶ It says these can lead to severe health problems and hospital stays.²⁶

What does Indian law say about weight-loss "cure" ads?

Under a 1954 law, ads may not suggest that a drug can treat obesity. The same ban covers diabetes and 52 other listed conditions.

The law is the Drugs and Magic Remedies (Objectionable Advertisements) Act, 1954. It bans ads suggesting a drug can diagnose, cure, treat or prevent any condition in its Schedule.⁶ The Schedule lists 54 conditions: obesity is item 38 and diabetes is item 9.⁶ A first conviction can bring up to 6 months in jail, a fine or both.⁶

The Supreme Court case. In 2022 the Indian Medical Association (IMA) petitioned the Supreme Court about Patanjali. It said the company was running a campaign of misinformation against modern medicine.²⁷ The dates below come from the court's August 2024 judgment unless marked.²⁷

• 21 Nov 2023The court recorded an assurance from Patanjali's lawyer: no ads breaking the law, and no casual claims of medicinal effect.²⁷ At that hearing, Justice Amanullah said the court would consider costs of up to ₹1 crore per product falsely claimed to "cure" a disease.²⁸ A news report says he made this remark orally.²⁸
• 4 Dec 2023A Patanjali newspaper ad spoke of "completely curing" lakhs of people of diseases like high blood pressure, sugar, thyroid, arthritis and asthma.²⁷ Sugar here means diabetes. The medicines shown were for sugar, blood pressure and liver problems.²⁷
• 27 Feb 2024The court said Patanjali had prima facie broken its assurance.²⁷ It issued notice to Patanjali and its managing director to show cause why contempt proceedings should not be initiated.²⁷ It also barred Patanjali, until further orders, from advertising products meant to cure conditions listed under the 1954 Act.²⁷ On 19 Mar 2024 it issued a similar notice to Baba Ramdev.²⁷
• 13 Aug 2024The court accepted their apology, closed the proceedings and discharged the notice to show cause.^27,29 It said that, after an unqualified apology, they had expressed regret on affidavit and in person. They also published apologies prominently in national and regional newspapers.²⁷ In the court's words, their later conduct showed "sincere efforts to purge themselves".²⁷ It warned that "any future intransigence" would be "viewed strictly".^27,29 The judgment does not mention costs.²⁷

The case was about Patanjali's ads and public statements in general. The judgment does not discuss any weight product, and it does not test whether any product works.²⁷

The ad pre-approval rule. Rule 170 made state licensing authorities approve ads for Ayurvedic, Siddha and Unani medicines.³⁰ The Ayush Ministry deleted it on 1 July 2024. The Supreme Court paused the deletion in August 2024 and lifted that pause in August 2025.³⁰ In March 2025 the court told states to set up ways to act on complaints under the 1954 Act.³⁰

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