Sildenafil comes as a tablet and suspension liquid to take by mouth. These medicines all work well for ED. Side effects Side effects of oral ED medicines are often mild. This is a type of high blood pressure that occurs between the heart and the lungs. They include dutasteride Avodart, Jalyn and finasteride Propecia, Proscar.How to Get Generic Viagra An inexpensive blood pressure medication might be an option for some men who suffer from erectile dysfunction By Ginger Skinner Last updated: June . Sildenafil (Liqrev, Revatio) is used to improve the ability to exercise in adults (Liqrev, Revatio) and children 1 year of age and older (Revatio) with pulmonary arterial . Generic Viagra (sildenafil) is an alternative to the branded Viagra drug that can be used for treating erectile dysfunction (ED). It’s now sold by many manufacturers, including online.