Make sure you have discussed any other medications you are currently taking or plan to take before starting sildenafil with your doctor and pharmacist. Sildenafil comes as a tablet and suspension liquid to take by mouth. You can take sildenafil with or without food. Age greater than 50 years or Coronary artery disease or Crowded disc or low cup to disc ratio in the eye an eye disorder or Diabetes or Hyperlipidemia high fats in the blood or Hypertension high blood pressure or Non-arteritic anterior ischemic optic neuropathy or NAION serious eye condition , history of or Smoking—May increase the chance for a serious side effect in the eye called NAION. Injections are dosed at 2.It is available in generic and brand versions. Generic sildenafil is covered by most Medicare and insurance plans, but some pharmacy coupons or cash prices may be lower. Get sildenafil for as low as $, which is 99% off the average retail price of $ for the most common version, by using a GoodRx coupon. F W RICHARDS JR INC. $ N Main St. Chase City, VA mi. Closed. () Get Coupon. Read on to learn about sildenafil and cost, as well as how to save money on prescriptions. Sildenafil price As with all medications, the cost of sildenafil can vary.