Fildena CT 100 (sildenafil 100 mg) can be taken with or without food. However, a heavy/high-fat meal can make sildenafil take longer to start working. D DailyMed +1 For best effect: Take it about 1 hour before sexual activity. A light/normal meal is generally fine. Avoid a very fatty meal immediately beforehand if you want faster onset. Do not take more than one dose in Fildena CT 100 . D DailyMed 100 mg is the maximum recommended dose for most adults; 50 mg is the usual starting dose. D DailyMed Also, don't use sildenafil with nitrate medicines (such as nitroglycerin) or combine it with other ED medicines such as tadalafil or vardenafil. D DailyMed If you tell me what you plan to eat and roughly when you plan to take the Fildena, I can tell you how that might affect its timing.