Cenforce, which contains sildenafil citrate, typically lasts for about 4 to 6 hours at full potency after administration. This duration allows men to achieve and maintain an erection during this time when sexually stimulated. The onset of action generally occurs within 30 to 60 minutes after taking the tablet, although some users may notice effects as quickly as 14 minutes. It is important to note that while the medication facilitates erections, it does not prolong them indefinitely; erections will still subside after ejaculation, similar to natural physiological responses.

The effectiveness of Cenforce 100mg can be influenced by various factors such as age, overall health, and whether it is taken on an empty stomach or after a heavy meal. A high-fat meal may delay the absorption of sildenafil, leading to a longer onset time and potentially affecting the duration of its effectiveness. Users are advised to take Cenforce approximately one hour before planned sexual activity and should not exceed the maximum recommended dosage of one tablet per day to avoid adverse effects.