Sildenafil does not prevent pregnancy or the spread of sexually transmitted diseases such as human immunodeficiency virus HIV. Priapism, or an erection lasting longer than four hours, is also a potential serious side effect. Sildenafil comes as a tablet and suspension liquid to take by mouth. As in the other titration studies, patients were started on 50 mg and allowed to adjust the dose up to mg or down to 25 mg of VIAGRA; all patients, however, were receiving 50 mg or mg at the end of the study. This site is intended only for U. What side effects can this medication cause?F W RICHARDS JR INC. $ N Main St. Chase City, VA mi. Closed. () Get Coupon. Best price for generic Viagra when bought in bulk: Optum Store Sildenafil If you are experiencing the symptoms of erectile dysfunction (ED), you may have considered using . The recommended dosage of Viagra for erectile dysfunction (ED) is 50 mg, taken as needed about 1 hour before sexual activity. You can take it 30 minutes to 4 hours before sexual activity. And you.

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