Patienten mit schweren Herz-Kreislauf- Erkrankungen wie instabiler Angina pectoris oder schwerer Herzinsuffizienz [New York Heart Association III oder IV]). ###>Agents for the treatment of erectile dysfunction should generally not be used in men for whom sexual activity is inadvisable (e. g. patients with severe cardiovascular disorders such as unstable angina or severe cardiac failure [New York Heart Association III or IV]).