It Targets the Problem and Works Quickly. But, some side effects, including flushing, heartburn, sinus congestion, and headaches, might prevent some men from taking them even though they work well. The medication was developed by U. Stop taking VIAGRA and call your healthcare provider right away if you have any sudden vision loss sudden hearing decrease or hearing loss. Side Effects Are Minimal.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 . An OTC drug will help patients get treatment more quickly. Dr. Pearlman says it can often take months to get an appointment with a healthcare provider who can . Always speak with your healthcare provider about possible interactions with all prescription drugs, vitamins, herbs and supplements, and over-the-counter drugs .