If you need emergency medical care for a heart problem, it will be important for your health care provider to know when you last took Cialis. After taking a single tablet, some of the active ingredient of Cialis remains in your body for more than 2 days. What alternatives can I use for erectile dysfunction? If you take nitrates in any form, or are on treatment for pulmonary hypertension , you should not take tadalafil. The active ingredient can remain longer if you have problems with your kidneys or liver, or you are taking certain other medications. 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.Cialis 20 mg Oral 1 tabletas. $ * Precio exclusivo de tienda en línea. * Producto sujeto a disponibilidad. * Descuento ya incluído en precios mostrados. Abona. $ a tu Monedero del Ahorro. Agregar al carrito. Tadalafil (Cialis) is a medicine used to treat erectile dysfunction (ED, also called impotence) and problems with urination caused by an enlarged prostate (benign prostatic hypertrophy or BPH). Tadalafil works by helping to relax the blood vessels in the penis, allowing blood to flow into the penis, and causing an erection. Treatment with Cialis mg to 5 mg and 5 mg met the primary endpoint, resulting in significantly higher percentages of men ( percent and percent, respectively) with IIEF-EF domain scores in the normal range (&#62 /= 26) through 12 weeks versus placebo ( percent; both, p &#). At week 4, significantly greater .