This medicine comes with a patient information leaflet. The following information includes only the average doses of this medicine. All it took was one Sildenafil recommended dose to know that this stuff is legit. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine. Keep from freezing. Kevin Y. For treatment of pulmonary arterial hypertension: For oral dosage forms suspension or tablets : Adults—20 milligrams mg 3 times a day.AdGet Deals and Low Prices On sildenafil mg On Amazon. Read Customer Reviews & Find Best Sellers. Free, Easy Returns On Millions Of Items.1M+ visitors in the past month. Find the best sildenafil citrate or viagra prices near you now with our cost comparison tool and start saving today. 20 MG; 50 MG; 25 MG; Quantity 30 tablets. 30 tablets; 10 Missing: goodrx.  · Descriptions. Sildenafil is used to treat men who have erectile dysfunction (also called sexual impotence). Sildenafil belongs to a group of medicines called Missing: goodrx.