A small placebo-controlled week study performed on men with erectile dysfunction used the Self Esteem and Relationship SEAR questionnaire to assess the impact of sildenafil treatment on patients. Follow your doctor’s orders or the directions on the label. Limited availability: Avanafil may not be as widely available as other ED pills, and its cost may be higher in some cases. Post navigation. Alternatively, the medicine may be taken 30 minutes to 4 hours before sexual intercourse.Sildenafil oral tablet is available as a brand-name drug and as a generic drug. Brand names: Viagra, Revatio. Sildenafil comes in three forms: an oral tablet, an oral suspension (liquid), and an. The Savings Offer and Program expire on 12/31/ For further information, call , visit test1.ru, or write: Viatris Inc., P.O. Box , Mission, KS See risks & benefits. Learn more about what VIAGRA® (sildenafil citrate), a prescription treatment for ED. Viagra comes as an oral tablet in different dosages. Discuss with your doctor what’s an appropriate dose for you. For daily use, Goldstein said, the generic form, sildenafil, comes in mg tablets.