Drug Class and Mechanism:  Tadalafil is is in a class of drugs called phosphodiesterase inhibitors.

The effect of tadalafil may last up to 36 hours. Individuals who are taking medications that increase the blood levels of tadalafil should not exceed a total dose of 10 mg in 72 hours. Tadalafil may be taken with or without food since food does not affect its absorption from the intestine.

Drug interactions:   If these drugs are being used at the same time as tadalafil, the dose of tadalafil should be reduced in order to avoid side effects from high levels of tadalafil.

Specification:  1kg/20kg/50kg are available