Adipex-P Adipex-P. Drug and Patient Information. Dosage. Overdose. Generic or Brand Adipex-P. For Professionals and Consumers. Adipex-P is a stimulant that is similar to an amphetamine. It is an appetite suppressant that affects the central nervous system. Adipex-P is used togther with diet, exercise and behavioral modification to treat obesity (excessively overweight) in people with [...]