Vidalista 60 mg is marketed as a tadalafil-containing medicine for men experiencing erectile dysfunction (ED). Tadalafil belongs to a group of medicines called phosphodiesterase type-5 (PDE5) inhibitors. It works by increasing blood flow to the penis during sexual stimulation, helping support an erection. Tadalafil can cause side effects such as headache, indigestion, back pain, muscle aches, flushing, nasal congestion, and dizziness. Higher doses may increase the likelihood or severity of adverse effects. An erection lasting longer than four hours requires urgent medical attention.