Your health information should remain between your provider and yourself. An erection results from an increase in blood flow to the penis. Finding an online ED provider can feel overwhelming. Most online providers require a picture of a valid ID, a selfie showing your face, and a recent blood pressure reading taken with a home blood pressure monitor or by a medical provider. Psychological factors like stress, depression, or anxiety can also contribute.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* with ED. With ED, you. The price you’ll pay for sildenafil may vary based on the strength and form of the drug your doctor prescribes for you. The price may also depend on which condition is being treated. This is. The average cost per pill of Viagra, for example, is $ But sildenafil, the generic version of Viagra, costs as low as $9 per pill. Many services sell these therapies, so a bit of research.