Ask your pharmacist or doctor for a copy of the manufacturer’s information for the patient. Ask your healthcare professional how you should dispose of any medicine you do not use. When hypertension occurs in the lungs, the heart must work harder to pump enough blood through the lungs. Keep out of the reach of children. Children—Use is not recommended.Oral medicines for ED usually work well and cause few side effects. The four main medicines taken by mouth for erectile dysfunction are: Avanafil (Stendra). . Sildenafil is in a class of medications called phosphodiesterase (PDE) inhibitors. Sildenafil treats erectile dysfunction by increasing blood flow to the penis during sexual stimulation. Missing: oral jelly.  · Sildenafil is used to treat men who have erectile dysfunction (also called sexual impotence). Sildenafil belongs to a group of medicines called phosphodiesterase Missing: oral jelly.