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Figure 2: Doxazosin Study 1: Mean Change from Baseline in Systolic Blood Pressure how long does it take for cialis to take effect Vardenafil puede disminuir el flujo de sangre al nervio óptico del ojo, causando pérdida de la visión de forma súbita. Esto ha sucedido en un número peque?o de personas que tomaron Viagra u otras drogas similares a vardenafil. La mayoría de estas personas también tenían ciertos problemas preexistentes del ojo o factores de riesgo para trastornos de los vasos sanguíneos (como enfermedad del corazón, diabetes, presión arterial alta, colesterol elevado, enfermedad de las arterias coronarias, fumar, o tener más de 50 a?os). No se entiende con claridad si vardenafil puede causar pérdida de la visión.Viagra 100 mg
8. Malozowski S, Sahlroot JT "Hemodynamic effects of sildenafil." N Engl J Med 343 (2000): 967-8
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