Phentramine Interactions Explained
The following sections explain in detail the potentially negative interactions that can occur when
Phentramine is combined with any of the drugs listed above.
Any Other Stimulants
Use caution when combining Phentramine with another stimulant. Phentramine contains a few different stimulants, which can be dangerous when taken with other stimulants.
Cimetidine
Cimetidine may increase the level of caffeine (an active ingredient of Phentramine) in the blood, perhaps increasing the risk of
Phentramine side effects. Check with your healthcare provider before taking these substances together.
Clozapine
For some people, caffeine (a component of Phentramine) can make psychotic symptoms worse. In addition, there is some evidence that caffeine may increase the level of
clozapine in your blood, which may lead to dangerous side effects. Check with your healthcare provider before combining these two substances.
Decongestants
Some of the stimulants in Phentramine and many nasal decongestants are chemically related. Therefore, taking them together may increase the risk of side effects.
Diabetes Medications
There is some evidence that caffeine (one of the ingredients in Phentramine) may affect blood sugar, although it is not clear how important this interaction may be. You may need to monitor your blood sugar more closely while taking Phentramine.
Fluoroquinolone Antibiotics
One of the components of Phentramine (
guarana) contains a significant amount of caffeine, and fluoroquinolone antibiotics can increase the level of caffeine in your blood, perhaps increasing the risk of side effects. Check with your healthcare provider before combining these two substances.