Phentramine Drug Interactions

Fluvoxamine
Fluvoxamine may increase the level of caffeine (one of the components of Phentramine) in your blood, possibly increasing your risk of Phentramine side effects. Ask your healthcare provider before taking these substances together.
 
Mexiletine
Mexiletine may increase the level of caffeine (a component of Phentramine) in the blood, which may increase the risk of side effects. Talk with your healthcare provider before combining these substances.
 
Monoamine Oxidase Inhibitors
Combining an MAOI with Phentramine can lead to life-threatening reactions. If you take an MAOI, do not take Phentramine.
 
QT-Prolonging Medications
Theoretically, combining Phentramine and a QT-prolonging medication could increase the risk of QT prolongation, a very dangerous irregular heart rhythm (arrhythmia).
 
Theophylline
Guarana (a component of Phentramine) contains caffeine. Combining caffeine with theophylline may lead to problems, so be sure to check with your healthcare provider before taking Phentramine and theophylline together.
 
Warfarin
Phentramine may interact unpredictably with warfarin. Check with your healthcare provider before combining these two substances.
 

Final Thoughts on Phentramine Drug Interactions

Phentramine products contain several other active ingredients, which may cause drug interactions that are not currently known. Therefore, you should talk with your pharmacist or healthcare provider about the Phentramine drug interactions that may apply to you.
 
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