After taking a single tablet, some of the active ingredient of Cialis remains in your body for more than 2 days. Tadalafil may not be safe for people with certain medical conditions, including people who have had a stroke , have coronary heart disease or retinitis pigmentosa an eye disease. Tadalafil does not prevent pregnancy or the spread of sexually transmitted diseases such as human immunodeficiency virus HIV. Swallow the pill whole. Talk to your doctor about eating grapefruit and drinking grapefruit juice while taking this medicine. CIALIS can cause your blood pressure to drop suddenly to an unsafe level if it is taken with any nitrate medication.AdGet a Prescription for ED treatment, discreetly deliverED to your test1.ruive Offers · How It Works · Get More Info4/5 ( reviews). CIALIS for once daily use is a lower dose you take every day. • Do not take CIALIS more than one time each day. • Take one CIALIS tablet every day at about the same time of day. You may attempt sexual activity at any time between doses. • If you miss a dose, you may take it when you remember but do not take more than one dose per day. AdUse Code WAG10 To Save 10% Instantly At Walgreens. Shop Online & Get Free Delivery! Shop Exclusive Online Promos At Walgreens with 1 Hour DeliveryOrder On test1.ru · Walgreens 1 Hour DeliveryService Catalog: Prescriptions · Flu Shots · Immunizations.