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What should I discuss with my healthcare provider before taking phentermine (Adipex-P, Oby-Cap, Suprenza, T-Diet, Zantryl)?
Do not use phentermine if you have used an MAO inhibitor such as furazolidone (Furoxone), isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam, Zelapar), or tranylcypromine (Parnate) in the last 14 days. A dangerous drug interaction could occur, leading to serious side effects.
Taking phentermine together with other diet medications such as fenfluramine (Phen-Fen) or dexfenfluramine (Redux) can cause a rare fatal lung disorder called pulmonary hypertension. Do not take phentermine with any other diet medications without your doctor's advice.
You should not take phentermine if you are allergic to it, or if you have:
To make sure you can safely take phentermine, tell your doctor if you have any of these other conditions:
FDA pregnancy category X. Weight loss during pregnancy can harm an unborn baby, even if you are overweight. Do not use phentermine if you are pregnant.
Phentermine can pass into breast milk and may harm a nursing baby. You should not breast-feed while taking phentermine.
Do not give this medication to a child younger than 16 years old.
Phentermine may be habit-forming and should be used only by the person it was prescribed for. Never share phentermine with another person, especially someone with a history of drug abuse or addiction. Keep the medication in a place where others cannot get to it.
How should I take phentermine (Adipex-P, Oby-Cap, Suprenza, T-Diet, Zantryl)?
Take exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.
Some brands of phentermine should be taken on an empty stomach before breakfast or within 2 hours after breakfast.
Suprenza disintegrating tablets can be taken with or without food.
Using dry hands, remove the Suprenza tablet from the medicine bottle and place the tablet in your mouth. It will begin to dissolve right away. Do not swallow the tablet whole. Allow it to dissolve in your mouth without chewing.
To prevent sleep problems, take this medication early in the day, no later than 6:00pm.
Talk with your doctor if you have increased hunger or if you otherwise think the medication is not working properly. Taking more of this medication will not make it more effective and can cause serious, life-threatening side effects.
Phentermine should be taken only for a short time, such as a few weeks.
Do not stop taking phentermine suddenly, or you could have unpleasant withdrawal symptoms. Ask your doctor how to avoid withdrawal symptoms when you stop using phentermine.
Store at room temperature away from moisture and heat.
Keep track of the amount of medicine used from each new bottle. Phentermine is a drug of abuse and you should be aware if anyone is using your medicine improperly or without a prescription.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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