Tadalafil, a phosphodiesterase type 5 inhibitor, is an ingredient in Vidalista 10mg, a medication used to treat male erectile dysfunction. The guanylate cyclase enzyme is activated by nitric oxide released by the erectile tissue of the penis during sexual stimulation. In less than, the medication begins to work, enabling a man to get an erection on his own. It is best to take it approximately 30-60 minutes before your planned sexual activity. This medication's most frequent side effects include flushing, headache, blurred vision, muscle soreness, upset stomach, and nose congestion. If you also take medications known as nitrates, avoid using this medication.