Cenforce, like Fildena, contains sildenafil citrate, and it typically starts to work within 30 to 60 minutes after ingestion. Key Points on Onset of Action: Time to effect: Most men begin to feel the effects within 30–60 minutes. Best taken on an empty stomach: A heavy or high-fat meal can delay the onset by slowing down absorption. ***** stimulation is required: Cenforce won’t cause an erection on its own — ***** arousal is necessary for it to work. Duration: Effects usually last for about 4 to 6 hours. This doesn’t mean a continuous erection — rather, the ability to get and maintain an erection during that window. If you’re considering Cenforce or currently using it and want advice on dosing, safety, or interactions (especially with alcohol or other medications), feel free to ask.