Cenforce 200 mg, containing sildenafil citrate, typically takes about 30 to 60 minutes to start working. For optimal effectiveness, it should be taken on an empty stomach or after a light meal. The onset of action may vary depending on individual factors such as metabolism, age, and overall health. Sexual stimulation is required for Cenforce 200 mg to work effectively. Its effects can last for up to 4 to 6 hours. Always follow the prescribed dosage and consult a healthcare professional before use to ensure safety and efficacy.