What sites do you recommend? Do not start these medications while taking sildenafil without discussing it with your healthcare provider. A newer form of the medicine that dissolves on the tongue might work faster than the pill that you swallow. Is my erectile dysfunction most likely temporary or chronic? In addition to your prepared questions, don’t hesitate to ask additional questions during your appointment.Sildenafil (Viagra) is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Sildenafil (Liqrev, Revatio) is used to improve the ability to exercise in . Oral medications are a successful erectile dysfunction treatment for many men. They include: Sildenafil (Viagra) Tadalafil (Adcirca, Cialis) Vardenafil (Levitra, Staxyn) Avanafil (Stendra) All four medications enhance the effects of nitric oxide — a natural chemical your body produces that relaxes muscles in the penis. See more. 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 .