Use protective measures and ask your doctor if you have any questions about this. If you will be taking this medicine for pulmonary arterial hypertension, your doctor will want to check your progress at regular visits. If your dose is different, do not change it unless your doctor tells you to do so. It may take longer to work if you take it with food. Do not use a kitchen teaspoon as it will not measure the right amount. Furthermore, sildenafil use requires caution in patients with anatomical deformation of the penis and patients with conditions potentially predisposing them to priapism, such as sickle cell anemia or multiple myeloma. However the dose is usually not more than 40 mg 3 times a day.The discount plan organization is Hippo Network LLC, One World Trade Center, Suite New York, NY , , help@test1.ru, test1.ru 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 . Find information on sildenafil and cost, how generic and brand-name prices compare, what financial assistance is available, and more. Sildenafil is used to treat erectile dysfunction (ED) and to reduce blood pressure in pulmonary arterial hypertension (PAH). It is taken when needed for ED and daily for PAH. A headache, stomach upsets, and flushing are the main side effects, and it should not be taken within 24 hours of a nitrate. 5. Tips.