If you are taking sildenafil to treat PAH, you will probably take sildenafil three times a day with or without food. Be sure to let your doctor and pharmacist know that you are taking these medications before you start taking sildenafil. It comes as standard tablets, chewable tablets, and as a liquid that you swallow. You’ll soon start receiving the latest Mayo Clinic health information you requested in your inbox. If it is not treated right away, priapism can permanently damage your penis sudden vision loss in one or both eyes. If you ever need emergency medical treatment for a heart problem, the healthcare providers who treat you will need to know when you last took sildenafil. Patients should always ask their doctors for medical advice about adverse events.AdFind the lowest available Sildenafil prices in your area. No sign-up required. Save now! Search & compare local Sildenafil prices. Save up to 80% on Sildenafil instantly!Search 1,s Of Drugs · Simple & Easy · The Industry Leader · No Hidden FeesMore: HELP · How It Works · FIND A PHARMACY. Get drug information. Search for a drug by name or NDC number and get complete drug information. It’s like the printout attached to your refill—only electronic. Help me find my info. Search by name. Search by NDC. Enter medication name (Ex. “Lipitor”). AdSave on 50, Brand Name & Generic Drugs With SingleCare®. Get Your Free Rx Coupon Now! Find the Lowest Price for Your Prescription and Save at Your Local Pharmacy Today/5 (2, reviews)Site visitors: Over K in the past month.