This increase in blood flow results in a firmer, longer-lasting erection. What Are the Symptoms of Erectile Dysfunction? 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. Levitra vardenafil : This medication is taken one hour before sex and can last up to 24 hours. Your health information should remain between your provider and yourself.Many providers sell Cialis online — learn about the safest and most discreet providers here. Cialis (tadalafil) is a prescription medication for those with erectile dysfunction. We have good news for you: generic Cialis, used to treat erectile dysfunction (ED)and enlarged prostates, just hit pharmacies. Prices for the generic, known as tadalafil, are more than 50% less than those of brand-name Cialis. As more men are able to afford tadalafil and treat their ED, it’s likely that many will have questions. Cialis (tadalafil) is an expensive drug used to treat erection problems in men. It may also be used to treat the enlargement of the prostate gland. This drug is slightly more popular than comparable drugs. It is available in both brand and generic versions.