Take sildenafil exactly as directed. Sexual activity may be a strain on your heart, especially if you have heart disease. However, if you take sildenafil with a high-fat meal, it will take longer for the medication to start to work. New Zealand Sildenafil was reclassified in New Zealand in so it could be bought over the counter from a pharmacist. If you become pregnant while taking sildenafil, call your doctor.Yes. Walmart Pharmacy offers an easy prescription experience, from medication refills with just a few clicks to low-cost generic meds starting at just $4. You can also transfer your prescription online quickly and easily. Just click “start a transfer” to create an account. Walmart’s Specialty Pharmacy can also make it easy for you to get the. Sildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4] [8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud’s phenomenon. [9] It is unclear if it is effective for treating sexual dysfunction in females. [8]. Brand names for sildenafil include Viagra, Revatio, and Liqrev. The cost for sildenafil oral tablet mg is around $10 for a supply of 2 tablets, depending on the pharmacy you visit. not an insurance plan. Valid at all major chains including Walgreens, CVS Pharmacy, Target, WalMart Pharmacy, Duane Reade and 65, pharmacies nationwide.