Generic sildenafil is covered by most Medicare and insurance plans, but some pharmacy coupons or cash prices may be lower. Get sildenafil for as low as $, which is 95% off the average retail price of $ for the most common version, by using a GoodRx coupon. See more.The studies that established benefit demonstrated improvements in success rates for sexual intercourse compared with placebo. Please expect up to 4 to 6 weeks for reimbursement. Also collected as part of the IIEF was information about other aspects of sexual function, including information on erectile function, orgasm, desire, satisfaction with intercourse, and overall sexual satisfaction. The combination can cause a dangerous fall in your blood pressure. Based upon measurements of sildenafil in semen of healthy volunteers 90 minutes after dosing, less than 0. Ideally a lab head will respond by inviting you to come by the lab for a meeting where you can discuss potential projects.Rarely reported side effects include: an erection that will not go away (priapism). If you have an erection that lasts more than 4 hours, get medical help right away. If it is not treated right away, priapism can permanently damage your penis. sudden vision loss in one or both eyes. Sildenafil (Viagra, Revatio) is a moderately priced drug used to treat erection problems in men. It is also used to treat pulmonary arterial hypertension, a serious heart and lung . Sildenafil citrate is a white to off-white crystalline powder with a solubility of mg/mL in water and a molecular weight of VIAGRA is formulated as blue, film-coated rounded-diamond-shaped tablets equivalent to 25 mg, 50 mg and mg of sildenafil for oral administration.Prolonged erections can be dangerous. The changes from baseline in scoring on the two end point questions frequency of successful penetration during sexual activity and maintenance of erections after penetration were highly statistically significantly in favor of VIAGRA. This medicine can interact with other medicines and supplements, causing potentially serious side effects. What special dietary instructions should I follow? It is not recommended for use in Australia.