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Berberine: Is It Really “Nature’s Ozempic”?

Scroll through social media long enough and you’ll see berberine called “nature’s Ozempic.” It’s one of the most popular supplements for weight loss and blood sugar right now. So does it live up to the hype? Here’s what the research actually shows, who it may help, and who should skip it.

What is berberine?

Berberine is a compound found in several plants, including goldenseal, barberry and Oregon grape. It has been used in traditional Chinese and Ayurvedic medicine for centuries. Today it’s sold as a dietary supplement, usually in 500 mg capsules.

What the research shows

Blood sugar: the strongest evidence

Berberine’s best-studied benefit is blood sugar. A 2024 review that pooled 11 earlier meta-analyses found berberine lowered hemoglobin A1c by about 0.6 percentage points and fasting blood sugar by about 14 mg/dL, along with improvements in insulin resistance (Nazari et al., Clinical Therapeutics). Most of those studies were in people with type 2 diabetes or PCOS.

Cholesterol: a modest benefit

In a 2025 trial of 337 adults with obesity, berberine at 1 gram a day lowered LDL (“bad”) cholesterol by about 8 mg/dL compared with placebo (JAMA Network Open).

Weight loss: small at best

This is where the hype outruns the science. A 2025 analysis of 23 randomized trials found that people taking berberine lost an average of just under 1 kilogram (about 2 pounds) more than people taking placebo, with about half an inch off the waist (International Journal of Obesity). In the 2025 JAMA Network Open trial above, six months of berberine did not reduce belly fat or liver fat compared with placebo.

The National Institutes of Health notes that the benefits that did show up were mostly at doses over 1 gram a day for more than 8 weeks, and that many studies had quality problems (NCCIH).

Is it really “nature’s Ozempic”?

No. In the main clinical trial of semaglutide (the medicine in Ozempic and Wegovy), people lost about 15% of their body weight over 68 weeks (New England Journal of Medicine). For a 220-pound person, that’s about 33 pounds. Berberine’s average is closer to 2 pounds.

That doesn’t make berberine useless. It just means it’s a supporting player, not a replacement for medical weight loss.

Who might consider berberine

• Adults looking for extra support for healthy blood sugar and cholesterol, alongside diet and exercise
• People with borderline blood sugar or insulin resistance who want to try lifestyle changes first, with their provider’s guidance
• Patients in a weight loss program who want added metabolic support, after checking with their provider

Side effects and who should avoid it

The most common side effects are stomach-related: nausea, cramping, bloating, constipation or diarrhea. Taking it with meals and starting with one capsule a day can help.

Talk with your provider before taking berberine if you:

• Take diabetes medicine. Berberine plus metformin, insulin or other glucose-lowering drugs can push blood sugar too low.
• Take a GLP-1 like semaglutide or tirzepatide. The stomach side effects can add up.
• Take other prescription medicines. Berberine can change how the liver processes many drugs, including cyclosporine.
• Are pregnant or breastfeeding. Berberine may not be safe during pregnancy or breastfeeding, and it is unsafe for newborns.

Choosing a berberine supplement

Supplements aren’t FDA-approved, so quality varies from brand to brand. Look for a company that uses third-party testing. We recommend Thorne Berberine, and it’s part of our Weight Loss Support stack, along with other products we use with our weight loss patients.

The bottom line

Berberine has real research behind it for blood sugar and a modest effect on cholesterol. For weight loss, the results are small. It can be a helpful add-on to healthy habits, but it isn’t “nature’s Ozempic.” If you’re struggling with your weight or blood sugar, a visit with a provider can help you find out what will actually work for you.

Disclosure: First Response Wellness earns a commission on purchases made through our Thorne storefront.

This article is for general education and is not medical advice. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Talk with your healthcare provider before starting any supplement.