Suhagra 100 mg contains sildenafil, so it can work for men with mild erectile dysfunction (ED). However, 100 mg is the maximum recommended sildenafil dose, not the usual starting dose. For most patients, the recommended starting dose is 50 mg, which can be reduced to 25 mg or increased to Suhagra 100 mg depending on effectiveness and tolerability. D DailyMed +1 For mild ED, a lower dose may be sufficient and may reduce side effects such as headache, flushing, dizziness, and indigestion. Sildenafil should generally be taken no more than once in 24 hours. D DailyMed Do not take sildenafil with nitrate medicines such as nitroglycerin, because the combination can cause a dangerous drop in blood pressure. D DailyMed If you tell me whether your ED is occasional or happens most of the time, I can explain whether 25 mg, 50 mg, or 100 mg is generally considered more appropriate.