Vidalista 20 mg contains tadalafil, a medicine commonly prescribed for treating erectile dysfunction (ED) in adult men. It works by helping increase blood flow to the penis when sexual stimulation occurs, which may support achieving and maintaining an erection. The effects of tadalafil can last for up to 36 hours in some people. Vidalista 20 mg should be used only according to medical advice, particularly if you take nitrates or have certain heart conditions. Common side effects may include headache, flushing, indigestion, nasal congestion, and back pain. Consult a qualified healthcare professional before using this medication