Rarely reported side effects include: an erection that will not go away priapism. Place the tip of the syringe into you or your child’s mouth and point it towards the cheek. The effects may be increased because of slower removal of the medicine from the body. Children 1 year of age and older weighing 20 to 45 kg—20 mg 3 times a day. The following information includes only the average doses of this medicine. If you experience a sudden loss of vision in one or both eyes, contact your doctor immediately. Box , Mission, KS If your pharmacy does not participate, you may be able to submit a request for a rebate in connection with this Savings Offer.The original little blue pill prescribed by doctors for over 20 years Clinically proven to treat men with erectile dysfunction (ED) Ongoing commitment to product quality and safety .  · Viagra; Descriptions. Sildenafil is used to treat men who have erectile dysfunction (also called sexual impotence). Sildenafil belongs to a group of medicines .