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Severe (Child Pugh Class C): The use of CIALIS is not recommended [see Warnings and Precautions (5.8) and Use in Specific Populations (8.6)].CIALIS contains lactose. Patients with rare hereditary problems of galactose intolerance, the Lapp lactase deficiency or glucose-galactose malabsorption should not take this medicinal product.

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In placebo-controlled clinical studies, the discontinuation rate due to adverse reactions for Viagra (2.5%) was not significantly different from placebo (2.3%). buy viagra online usa ?nosebleedsPhysicians should advise patients to stop use of all phosphodiesterase type 5 (PDE5) inhibitors, including Cialis, and seek medical attention in the event of a sudden loss of vision in one or both eyes. Such an event may be a sign of non-arteritic anterior ischemic optic neuropathy (NAION), a rare condition and a cause of decreased vision, including permanent loss of vision, that has been reported rarely postmarketing in temporal association with the use of all PDE5 inhibitors. Based on published literature, the annual incidence of NAION is 2.5-11.8 cases per 100,000 in males aged ≥50. An observational study evaluated whether recent use of PDE5 inhibitors, as a class, was associated with acute onset of NAION. The results suggest an approximate 2-fold increase in the risk of NAION within 5 half-lives of PDE5 inhibitor use. From this information, it is not possible to determine whether these events are related directly to the use of PDE5 inhibitors or other factors [see Adverse Reactions (6.2)].Before you start to take it

Clinical ResultsDon't take Viagra if you're taking nitrate drugs for chest pain or heart problems. This mix can cause a sudden and serious drop in blood pressure, making you feel dizzy and faint, and possibly bring on a heart attack or stroke.Administrative, technical, or material support: Qureshi, Han.