But ingredients in fat burners can interact with medications and cause serious problems, so it’s important to make sure your doctor is aware,” Matteo says. ![]() “Patients aren’t always forthcoming about what supplements they’re taking. If you’re considering these supplements, talk it over with your doctor or a pharmacist first. ![]() And some of them are downright dangerous. They aren’t regulated, contain questionable ingredients and aren’t likely to give you a sculpted shape. “I would not recommend using any of these over-the-counter fat burners.” Are fat burners safe?įat burners have many strikes against them. “Weight-loss supplements contain a whole slew of herbals and other ingredients, and the dosage isn’t always listed,” Matteo says. Many supplements contain dozens of ingredients or more, so it can be hard to say how they might affect your health. Some fiber-rich ingredients common in supplements include:įat burners can contain many other ingredients, too, such as: And soluble fiber can help prevent your body from absorbing some of the fat from the foods you eat,” Matteo says. “Fiber doesn’t increase fat burn but it helps control appetite. Some fat burners contain ingredients high in soluble fiber. At high doses, it can even cause heart problems and kidney failure. Yohimbe can cause headaches, anxiety, agitation and increased blood pressure. It’s found in many weight-loss supplements, but there’s very little research on it. This plant compound comes from the bark of an evergreen tree. Too much carnitine can cause nausea, vomiting, diarrhea and a fishy body odor. But research on its weight-loss benefits is mixed. It’s found in many types of meat and dairy products, and your liver and kidneys make it naturally. This compound helps with your metabolism and gives you energy. “You’d probably burn more calories by taking a brisk walk each day.” Carnitine “But the amount of weight loss isn’t that significant,” Matteo says. This ingredient might help burn calories and may reduce the amount of fat you absorb from food. Many fat burners contain extracts made from green tea. Too much caffeine can cause nervousness, jitteriness, insomnia - and even a dangerously high heart rate. But supplements can contain a lot more caffeine than coffee, tea, chocolate or other natural sources. Some of the more common ingredients are: CaffeineĬaffeine stimulates your nervous system and might help burn calories. There are dozens of ingredients in weight-loss supplements, including herbal ingredients and other compounds. “Because the FDA doesn’t regulate them, we don’t really know their effectiveness,” Matteo cautions. That means manufacturers can make all sorts of claims about their products, even if they have no evidence to back them up. More importantly, though, fat burners aren’t regulated by the U.S. But most of these supplements haven’t been tested in scientific studies. ![]() Some of the ingredients found in fat burners have been linked to small amounts of weight loss. Suppress your appetite, so you consume fewer calories.Īt least, that’s how they work in theory.Reduce the amount of fat your gut absorbs.Increase your metabolism, so you burn more calories.Instead, they attempt to drive weight loss in other ways. But don’t expect any miracles.ĭespite their name, fat burners don’t actually make fat cells go up in smoke. The products claim to help people lose pounds and get a more sculpted shape. ![]() What are fat burners?įat burners are dietary supplements that might contain natural or artificial compounds. To better understand fat burners, Matteo tells us if they work, what’s in them and some healthier and safer alternatives. “Proceed with caution,” warns registered dietitian Melissa Matteo, RD. We do not endorse non-Cleveland Clinic products or services. Advertising on our site helps support our mission. Cleveland Clinic is a non-profit academic medical center.
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