Rarely reported side effects include: an erection that will not go away priapism. This increased blood flow can cause an erection. Do not mix the liquid with other medications or add anything to flavor the medication. 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. What special precautions should I follow?Compare prescription drug prices and find coupons at more than 70, US pharmacies. Save up to 80% instantly! Dosage Quantity Manufacturer’s Savings Card Sponsored You may be eligible to save up to 50% on your brand-name prescription * * Terms and Conditions Apply Get Savings Card Pharmacy Offers in Your. Once they see how much a drug will cost, they can compare prescription prices to identify money-saving alternatives. So far, it’s working — saving an average of over $ per fill. Find out how Script Intelligence helps.