Used to treat penile disorders and for erectile dysfunction commonly known as impotence or ED. Vidalista 5 medicine is one of the most potent PDE-5 inhibitors. The tadalafil present in this drug increases the blood flow in the penile arteries thus allowing more blood to flow through them. You should not change the dose of the pills suddenly as it may cause side effects. This medicine should be used as advised by your doctor. This medicine should be used only once a day, otherwise it can cause damage to the body.