Cenforce (generic Viagra), Vidalista (generic Cialis) and Vilitra (generic Levitra) all work through the same PDE-5 inhibitor mechanism — but differ in ways that matter significantly. Vidalista lasts 24 to 36 hours and has no food interaction. Cenforce works in 30 to 60 minutes but needs an empty stomach. Vilitra has the highest PDE-5 selectivity with the cleanest side effect profile. This complete comparison helps you choose based on your lifestyle, health, and preferences.