Cenforce 150, which contains sildenafil, typically starts to work within 30 to 60 minutes after ingestion. It is most effective when taken on an empty stomach, as food, especially high-fat meals, can delay its absorption. Once it begins to work, Cenforce can help achieve and maintain an erection for up to 4 to 6 hours. However, the duration of its effects can vary based on individual factors such as metabolism, overall health, and dosage. It's important to note that Cenforce requires sexual stimulation to be effective; it won’t produce an erection without arousal. To avoid potential side effects and ensure optimal performance, it's advised to follow your healthcare provider's instructions regarding dosage and timing. If you experience any adverse effects or if Cenforce does not seem to be working as expected, consult with your healthcare provider for guidance.