Cenforce 100 typically begins to work within 30 to 60 minutes after oral consumption. However, the exact onset time can vary based on factors such as metabolism, diet, and overall health. For best results, it’s recommended to take Cenforce 100 on an empty stomach with a full glass of water. Fatty meals can delay its effects. Sexual stimulation is required for the medication to work effectively. Once active, the effects can last for up to 4 to 6 hours, helping men achieve and maintain a firm erection. Avoid alcohol and grapefruit juice, as they may interfere with its performance.