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Carcinogenesis — Tadalafil was not carcinogenic to rats or mice when administered daily for 2 years at doses up to 400 mg/kg/day. Systemic drug exposures, as measured by AUC of unbound tadalafil, were approximately 10-fold for mice, and 14- and 26-fold for male and female rats, respectively, the exposures in human males given Maximum Recommended Human Dose (MRHD) of 20 mg.Caution is advised when PDE5 inhibitors are co-administered with alpha-blockers. PDE5 inhibitors, including Levitra, and alpha-adrenergic blocking agents are both vasodilators with blood-pressure lowering effects. When vasodilators are used in combination, an additive effect on blood pressure may be anticipated. In some patients, concomitant use of these two drug classes can lower blood pressure significantly leading to symptomatic hypotension (for example, fainting) [see Drug Interactions (7.1) and Clinical Pharmacology (12.2)]. Consideration should be given to the following: buy viagra online without prescription

Recuerde, mantenga ésta y todas las otras medicinas fuera del alcance de los ni?os, no comparta nunca sus medicinas con otros, y use este medicamento sólo para la condición por la que fue recetada.

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