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Phentermine - Indications, Dosage, Side Effects and Precautions

Written & Compiled by Anushta Chandrapalan, M.Sc  | Medically Reviewed by The Medindia Medical Review Team
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Information about Phentermine

Generic Name : Phentermine
Pronunciation : fen’ ter meen
Latest prescription information about Phentermine. Learn how to pronounce the drug's name, its indications, dosage, how to take, when to take, when not to take, side effects, special precautions, warnings and its storage instructions . Also listed are the International and Indian trade name(s) of the drug and its price list.
ICD Code : Y57.0 | Therapeutic Classification : Anorexigenic Agents
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Trade Names/Brand Names of Phentermine

International- Adipex-P, Ionamin, Fastin , Suprenza.
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Why is Phentermine Prescribed? (Indications)

This medication is an appetite suppressant, prescribed for exogenous obesity. It works by decreasing appetite.

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When should Phentermine not be taken? (Contraindications)

Contraindicated in patients with heart disease, high blood pressure, overactive thyroid, increased eye pressure, blocked blood vessels, who are taking MAOIs or within 14 days of MAOIs administration and hypersensitivity.

What is the dosage of Phentermine?

The recommended dose is 30 mg once daily about 2 hours after breakfast.

How should Phentermine be taken?

It comes as a tablet and capsule to take by mouth, 30 minutes before food.

What are the warnings and precautions for Phentermine?

• Caution should be exercised in patients with heart disease, hypertension, diabetes, overactive thyroid, increased eye pressure, who are taking other medications, in children and during breastfeeding.

• It may cause dizziness, do not drive a car or operate machinery while taking this medication.

• Avoid alcohol consumption.

• It should not be used in children less than 12 years of age.

What are the side effects of Phentermine?

   Heart : Palpitations, fast heart rate and elevation of blood pressure.
   Central Nervous System : Restlessness, dizziness, sleeplessness, emotional state, tremor and headache.
   Gastrointestinal : Dryness of the mouth, unpleasant taste, diarrhea, constipation and other gastrointestinal disturbances.
   Allergic Reactions : Hives.
   Endocrine : Impotence and changes in sexual drive.

What are the other precautions for Phentermine?

Avoid excess dosage.

What are the storage conditions for Phentermine?

Store it at room temperature.




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MaryG, Costa Rica

thank you, phentermine is quite dangerous for your health and it is better don't use it in my opinion, i am using phenterpill, a natural diet pill and i am not having the side effects linked to the phentermine but i am lose weight.

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