Sildenafil may cause side effects. Follow the manufacturer’s directions to use and clean the oral syringe. Your doctor or other health care professional can recommend one for you based on these factors, other health conditions you have and any other medicines you take. Severe liver disease. The body takes longer to absorb it after a high-fat meal or alcohol. 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.Sildenafil is available as oral tablets of 25 mg, 50 mg, and mg strength for erectile dysfunction (ED). Most patients receive a prescription for 50 mg of oral sildenafil, taken as needed approximately 1 hour before sexual activity. The dose can be titrated upward to a maximum of mg or down to 25 mg based on individual . Sildenafil (Viagra, Revatio) is a moderately priced drug used to treat erection problems in test1.ru is also used to treat pulmonary arterial hypertension, a serious heart and lung . swelling in your hands, ankles, or feet; shortness of breath; seizure (convulsions); or. a light-headed feeling, like you might pass out. Common Viagra side effects may include: flushing (warmth, redness, or tingly feeling); headache, dizziness; abnormal vision (blurred vision, changes in color vision) runny or stuffy nose, nosebleeds;.