Are over-the-counter diet pills as effective as Phentermine? Explore how Hydroxycut, Slim Fast, and fat-burning supplements like Yohimbine impact appetite and metabolism during fasting.
Amphetamines are classified as a stimulant and function as an appetite suppressant in diet pills. The term "amphetamines" typically refers to the different types, such as amphetamine, dextroamphetamine and methamphetamine, states the U.S. Drug Enforcement Administration.
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In 2007, $1.7 billion was spent on weight loss or diet pills, according to research from Nutrition Business Journal, appearing in Newsweek magazine. Some appetite suppressants are on the market as dietary supplements, which are not regulated by any governing body, and can be purchased over-the-counter.
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