Also indexed as: Adipex-P, Fastin, Ionamin, Obenix, Obephen, Obermine, Obestin, Phentamine, Phentride, T-Diet, Zantril
Phentermine is a nonamphetamine drug used as a short-term adjunct to calorie restriction for weight loss. Phentermine is available in two forms, phentermine hydrochloride (Fastin® and others) and phentermine resin (Ionamin® and others).
Summary of Interactions with Vitamins, Herbs, and Foods
In some cases, an herb or supplement may appear in more than one category, which may seem contradictory. For clarification, read the full article for details about the summarized interactions.
| Depletion or interference | None known |
| Side effect reduction/prevention | None known |
| Supportive interaction | None known |
| Reduced drug absorption/bioavailability | None known |
| Adverse interaction | None known |
An asterisk (*) next to an item in the summary indicates that the interaction is supported only by weak, fragmentary, and/or contradictory scientific evidence.
Interactions with Foods and Other Compounds
Food
Phentermine should be taken on an empty stomach.1
Alcohol
Phentermine may cause dizziness or blurred vision.2 Alcohol may intensify these effects, increasing the risk for accidental injury. People taking phentermine should avoid alcohol.
References
1. Threlkeld DS, ed. Central Nervous System Drugs, Anorexiants. In Facts and Comparisons Drug Information. St. Louis, MO: Facts and Comparisons, Mar 1989, 239.
2. Threlkeld DS, ed. Central Nervous System Drugs, Anorexiants. In Facts and Comparisons Drug Information. St. Louis, MO: Facts and Comparisons, Mar 1989, 239.
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2006-09-07
