What should I avoid while taking sildenafil?
Drugs other than those listed here may also interact with sildenafil or affect your condition. Talk to your doctor or pharmacist before taking any prescription or over-the-counter medicines, including herbal products.
cimetidine (Tagamet, Tagamet HB); phenobarbital (Luminal); carbamazepine (Tegretol) or phenytoin (Dilantin); or
Before taking sildenafil, tell your doctor if you are taking any of the following medications:
Drugs other than those listed here may also interact with sildenafil or affect your condition. Talk to your doctor or pharmacist before taking any prescription or over-the-counter medicines, including herbal products.