Weight loss supplements come in many different varieties with all kinds of ingredients. Behind some of the big claims, however, lies actual science and clinical trials. These weight loss supplements with a scientific track record go on to earn approval from the U.S. Food and Drug Administration. By learning about the FDA approved weight loss supplements, it is possible to avoid scams, rip offs or dangerous unapproved diet pills.
Orlistat
Orlistat, marketed internationally and in the United States under the brand names Xenical and Alli, is the only FDA-approved weight loss supplement that is available as a prescription strength and over-the-counter drug, according to Drugs.com. MayoClinic.com notes that Alli, the over-the-counter version, is about half the strength of Xenical and though it is approved by the FDA it is under investigation for links to liver damage. Xenical, the full strength version of Orlistat on the market, is known to cause oily spotting and oily stools, and can also cause liver damage. Signs of liver problems caused by Orlistat include dark urine, loss of appetite and yellowing of the skin.
Sibutramine
Sibutramine, mostly available online now that its U.S. manufacturer has stopped producing the substance, works by targeting the brain's hunger centers. FDA approved, it is officially classed as an appetite suppressant. Medline Plus notes that the bulk of the weight loss associated with sibutramine takes place during the first six months of use. If at least 4 lbs. are not lost in the first four weeks, the medication is not considered to have worked. Medline Plus notes that minor side effects associated with sibutramine include headaches, heartburn, dry mouth and flu-like symptoms. Major side effects include changes in heart rate, chest pain and heart attacks.
Phentermine
One of the oldest diet pills on the market, phentermine is approved by the FDA as an appetite suppressant and metabolism stimulant. According to Drugs.com, phentermine works by targeting the central nervous system. It is used primarily in populations that have obesity risk factors present, such as diabetes or high cholesterol. Drugs.com notes that phentermine can have a serious lung side effect that is fatal, so patients need to take care not to mix the medication with other diet pills or medications.
Member Comments