The products discussed in this site may have different product labeling in different countries. Ask your pharmacist or doctor for a copy of the manufacturer’s information for the patient. This site is intended only for U. You can take sildenafil with or without food. If you are taking sildenafil to treat erectile dysfunction, follow your doctor’s directions and the guidelines in this paragraph. Shake the liquid well for 10 seconds before each use to mix the medication evenly. However, if you take sildenafil with a high-fat meal, it will take longer for the medication to start to work.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 · No Hidden Fees · Huge SavingsMore: HELP · How It Works · FIND A PHARMACY. DRUG_DESCRPTION Compare DRUG_NAME prices and find coupons that could save you up to 80% instantly at pharmacies near you such as CVS, Walgreens, Walmart, and . Viagra dosage for erectile dysfunction (ED) is usually milligrams (mg), but those over 65 may start at 25 mg. Your doctor will also need to consider possible drug interactions.