Tadarise 5 is a medication that contains the active ingredient tadalafil in a low dose (5 mg). Tadalafil belongs to a class of drugs called phosphodiesterase type 5 (PDE-5) inhibitors. It is primarily used to treat erectile dysfunction (ED) in men, but it has other medical uses as well. Tadarise 5 is prescribed to men who have difficulty achieving or maintaining an erection sufficient for sexual intercourse. It works by increasing blood flow to the penis, which helps in achieving and maintaining an erection when sexually aroused.