Recent heart or blood vessel problems. Please expect up to 4 to 6 weeks for reimbursement. Rarely reported side effects include: an erection that will not go away priapism. Your doctor or other health care professional can recommend one for you based on these factors, other health conditions you have and any other medicines you take. Medicines that block an enzyme called CYP3A4. Oral medicines for ED usually work well and cause few side effects. These medicines all work well for ED.It will get the doctor’s attention, and it will help make sure the man will actually bring up the subject. See a sex therapist. The name “sex therapist” may sound intimidating. When to seek help Summary Erectile dysfunction, or ED, is a common condition that can make sexual activity difficult. It may lead to a loss of intimacy in a marriage or long-term . 1. How it works Sildenafil may be used to treat erectile dysfunction (ED or impotence) in men (Viagra brand) or pulmonary arterial hypertension in both men and women (Revatio .