Adipex Side Effects

When you take Adipex, side effects may occur. Some of the side effects that have been reported with the weight loss medication include constipation, hyperactivity, dry mouth, and sexual problems. Certain side effects of Adipex are potentially serious and should be reported to a healthcare provider immediately, including hallucinations, a rapid heart rate, high blood pressure, and signs of an allergic reaction.

 

An Introduction to Adipex Side Effects

As with any medicine, side effects are possible with Adipex-P® (phentermine); however, not everyone who takes the medication will experience side effects. In fact, most people tolerate it quite well. In most cases, side effects occur when too much Adipex-P is taken.
 
(This article covers many, but not all, of the possible side effects with Adipex-P. Your healthcare provider can discuss a more complete list of Adipex-P side effects with you.)
 

Common Side Effects of Adipex

Adipex-P has been studied thoroughly in clinical trials. In these studies, the side effects that occur in a group of people taking the drug are documented and are then compared to side effects that occur in another group of people not taking the medicine. This way, it is possible to see what side effects occur, how often they appear, and how they compare to the group not taking the medicine. With newer medications, information about the exact percentages for these side effects are available. However, with older medications (such as Adipex-P), these statistics are not available.
 
In studies, Adipex side effects included:
 

 

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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;