Most companies have an FAQ or shipping policy page you can reference to learn whether discreet packaging is available. The body takes longer to absorb it after a high-fat meal or alcohol. Its effects often last for 4 to 5 hours. In some cases, ED can cause a strain on relationships and impact self-esteem. Taking generic ED medications is an effective way to save money without sacrificing quality. More serious side effects may include a drop in blood pressure or an erection that lasts longer than four hours.Sildenafil (Viagra, Revatio) is a moderately priced drug used to treat erection problems in test1.ru is also used to treat pulmonary arterial hypertension, a serious heart and lung . Q&A Drug Images What is Viagra? If you have erectile dysfunction (ED), your doctor may recommend that you take Viagra. It’s a prescription drug that’s used in adult males* . Viagra is only available with a prescription in the United States, Canada, and most other countries. Viagra is sold under the generic name sildenafil, which is also only available .