Efil 2.5 Mg Tablet is a medicine that is used to treat sexual ailments in men. This medicine will help you get/maintain an erection only if you are sexually stimulated. Avoid taking more than the recommended dose. This medication is a phosphodiesterase (PDE) inhibitor, prescribed for erectile dysfunction (impotence; inability to get or keep an erection) in men. It increases blood flow to the penis during sexual stimulation.