Theoretically, Sildigra 250mg, which contains sildenafil citrate, functions similarly to other sildenafil dosages by enhancing blood flow to the penis to facilitate the onset and maintenance of an erection. A 250 mg dose, however, is much more than the typical recommended dosages of 25 mg, 50 mg, or 100 mg. Efficacy: Although a dose of 250 mg is not customary, the drug itself may be helpful. Lower doses are advised by the majority of clinical trials and medical guidelines because they are more effective and have a better safety profile. Safety: Excessive dosages of sildenafil raise the possibility of unpleasant side effects such headaches, flushing, indigestion, congestion of the nasal passages, and in rare instances, more serious side effects like priapism (a prolonged erection) or cardiovascular problems.