What is America's number-one-selling diet pill?

According to Amazon.com, the best-selling diet pill is Ubervita W700 Thermogenic Hyper-Metabolizer, as of 2014. This pill actively increases the body's metabolism in order to burn fat. It was developed for use by professional athletes.

These diet pills contain a mix of chemicals and vitamins that have been found beneficial in helping the body to lose weight. The chemicals and vitamins included in these weight loss pills each perform a different role in helping to lose weight. These chemicals increase metabolism, suppress appetite, slow fat production, cause a "full" feeling and also block fat from being absorbed into the body. Other top-selling diet pills include Abidexin, LipoFuze and Phenphedrine.