Drug Interactions

Phentermine is a sympathomimetic amine with pharmacological activities similar to the amphetamines. Tachyphylaxis and tolerance have been seen with all drugs of this class. Phentermine hydrochloride is a white crystalline powder with its chemical name phenyl-tertiary-butylamine hydrochloride. Along with its needed effects Phentermine will also cause some side effects. Please consult the medical practitioner in case of effects which is unmanageable.

Possible Phentermine side effects

• Chest pain
• Fainting
• Breathing trouble and swollen feet or lower legs

Common symptoms

• Depression
• Nervousness and tiredness
• Blood pressure increase
• Irritability

Rare symptoms

• Blurred vision, change in sexual desire and clumsiness
• Confusion, diarrhea and dizziness
• Headache, dry mouth and nausea
• Irregular heartbeat, tiredness and stomach pain
• Unpleasant taste and vomiting

With Phentermine certain medicines should not be used together. Listed here are some of the prescription and non prescription medications which cannot be used along with Phentermine:

• Blood pressure medicine or MAO inhibitors [Furazolidine, Phenelzine, Selegiline, Tranylcyprodine]
• Stimulant drugs like decongestants or caffeine
• Redux and Pondimin
• Amphetamines
• Amantadine
• Medicines for asthma or breathing problems
• Nabilone
• Methylphenidate
• Tricyclic antidepressants [Elavil, Anafranil, Asendin, Sinequan, Aventyl, Tofranil]