Prolonged erection: If an erection lasts longer than 4 hours a rare occurrence , seek immediate medical assistance. Alcohol: Consumption of alcohol in large amounts may decrease the ability to get an erection and may also temporarily decrease blood pressure, causing dizziness and fainting. Read our editorial process. Popular ED medications found online include: Viagra sildenafil : As the first FDA-approved PDE5 inhibitor for ED, sildenafil is taken 30 minutes to four hours before sexual intercourse to help achieve and maintain an erection. You can see an in-person provider or speak with a doctor virtually. Some platforms have a digital pharmacy that ships the medication to your home, while others send an electronic prescription to your local pharmacy. While in some cases the condition may improve over time, it can also be permanent.Flyer 0 Home Health Medication dictionary Viagra tablet 50mg Viagra tablet 50mg Description This medication is typically used for erectile problems in men. Its effects can . sildenafil In this drug factsheet: How does this medication work? What will it do for me? How should I use this medication? What form (s) does this medication come in? Who . CHOOSE BRAND-NAME VIAGRA. The original little blue pill prescribed by doctors for over 20 years. Clinically proven to treat men with erectile dysfunction (ED) Ongoing .