You’ll also need to fill out a medical questionnaire with answers about your medical history, current medications, and lifestyle habits. Ask your pharmacist or doctor for a copy of the manufacturer’s information for the patient. Methodology We researched 19 online platforms for erectile dysfunction treatment to learn more about the process of ordering ED pills online. Continue to take sildenafil even if you feel well. If you are taking sildenafil to treat PAH, you will probably take sildenafil three times a day with or without food. · Sildenafil is used to treat erectile dysfunction and pulmonary arterial hypertension. Includes sildenafil side effects, interactions and indications. Find the best sildenafil citrate or viagra prices near you now with our cost comparison tool and start saving today. Open Singup. Prescription prices may vary from pharmacy to . CHOOSE BRAND-NAME VIAGRA The original little blue pill prescribed by doctors for over 20 years Clinically proven to treat men with erectile dysfunction (ED) Ongoing .