Cenforce Professional, it is marketed as a sublingual sildenafil product, commonly listed as 100 mg. Some product information recommends taking it about 15–30 minutes before sexual activity, because it is intended to dissolve under the tongue. I iMedix +1 However, the standard approved sildenafil instructions are different: 50 mg about 1 hour before sex, with a usable window of roughly 30 minutes to Cenforce Professional , and no more than one dose in 24 hours. The maximum recommended ED dose is 100 mg. D DailyMed So, if your Cenforce Professional is 100 mg, don't assume that taking it earlier or taking more will improve the effect. Do not combine it with other sildenafil products (such as Vigora, Silagra, Eriacta, or Fildena) within the same 24 hours. If you tell me whether your Cenforce Professional is 50 mg or 100 mg, I can explain the timing, food considerations, and expected duration more specifically.