Generic tadalafil contains the identical active ingredient to the brand and is held to the same FDA bioequivalence standard, at a lower cash price.

Take at least 30 minutes before activity, no more than once daily. Effects can last up to 36 hours.

Common: headache, indigestion, back pain, muscle aches, flushing.

Contraindicated with nitrates. Discuss cardiovascular history and any alpha-blocker use with your prescriber.