Diet pills have a bad reputation, which might be well-earned. According to MayoClinic.com, common side effects of diet pills include everything from nausea and rapid heartbeat to high blood pressure and cardiac problems. But some diet pills do offer benefits as well, as long as they're used in moderation and as indicated. Always talk to a doctor before trying a new diet pill. This is especially important if you have a medical condition, as some diet pills might interact with prescription drugs or cause serious side effects.
Help Control Appetite
Phentermine hydrochloride is a prescription drug used to control appetite. It works by tricking your brain into believing you're full and satisfied, even though you're eating less than usual. Sold under the brand name Adipex-P, phentermine hydrochloride is meant to be used for only a few weeks, so side effects, if they occur, are unlikely to be permanent or cause lasting problems. Over-the-counter appetite suppressants have not been evaluated or approved by the FDA, so it's hard to say whether they work or not. However, MayoClinic.com points out that some are likely safe, including chromium, country mallow, green tea extract and hoodia.
Control Fat Intake
Alli and Meridia are two fat blockers approved by the FDA. Although both are brand names for the drug orlistat, Alli contains a lower concentration and is sold over the counter. Meridia requires a prescription. Orlistat works by blocking some of the fat you consume and forcing it to pass through the body undigested. Because your body is not absorbing it, the calories don't end up accumulating in your body. According to MayoClinic.com, people who take orlistat lose more weight than those who just use diet and exercise to lose weight.
Provide an Energy Kick
Many diet pills contain stimulants that are meant to raise your heart rate and increase metabolism. While their original intention is not to cause a raise in energy levels, many pills do just that. If you want to exercise more, these pills could provide the extra edge to keep you energized throughout a workout.
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