There is a new weight loss miracle buzzing in social media. Berberine is being promoted as a "natural Ozempic," an herbal medication that people say causes miraculous weight loss. TikTok is on fire with testimonials and claims of great benefits. Online Google searches for berberine have more than doubled over the past few months. 

But what is it and does it really work? Berberine is a naturally occurring alkaloid found in many plants, such as barberry, Oregon grape, Chinese goldthread and tree turmeric. It has been used for centuries in traditional Chinese and Ayurvedic medicine, where it is said to have anti-inflammatory and antioxidant effects. 

A number of human clinical studies give us an intriguing but limited view into the effects of this herbal medication. It does appear that there is a real and significant effect on lowering blood sugar levels in people with prediabetes and mild forms of type II diabetes. In a series of small clinical trials, hemoglobin A1C (HbA1C) levels typically fell by about one percent, and measures of insulin resistance improved. In people with diabetes and elevated cholesterol, there also was a small but significant improvement in cholesterol and triglyceride levels. 

But what about berberine for weight loss? The available evidence suggests that the current hype regarding berberine for weight loss is over blown. Studies on diabetes and hyperlipidemia showed only small decreases in weight. In different studies, the weight loss varied from none to about 4 lbs, with an accompanying small decrease in BMI (about 0.7). 

Side effects of berberine are mostly gastrointestinal. Up to a third of people who take it complain of nausea, diarrhea or constipation. Even more notice an increase in flatulence. It seems that berberine is a galactosidase inhibitor, which may account for the increased flatulence in some people. Berberine also has antimicrobial properties that may affect the gut microbiome and lead to GI discomfort. 

Is berberine a "natural Ozempic"? Not really. Semaglutide, the drug found in Ozempic, Wegovy and Rybelsus, has much larger and consistent ability to control blood sugar and help people reduce weight. 

But sadly, neither berberine nor semaglutide is a "magic pill." The reality is that unless people make lasting changes to their diet and exercise lifestyle, any short-term effects of medications to reduce weight won't last, and the weight that is lost will come back. Of course, if you improve your diet and begin a routine of regular exercise, your weight will come off even without these medications.