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The placebo-subtracted mean maximal decreases in systolic blood pressure over a 12-hour period after dosing in the placebo-controlled portion of the study (part Cmax) are shown in Table 6 and Figure 3 . Therefore, CIALIS administration with nitrates is contraindicated. In such circumstances, nitrates should still only be administered under close medical supervision with appropriate hemodynamic monitoring [see CONTRAINDICATIONS] . In clinical pharmacology studies, tadalafil (5 to 20 mg) was shown to potentiate the hypotensive effect of nitrates. Therefore, the use of CIALIS in patients taking any form of nitrates is contraindicated [see CONTRAINDICATIONS] .
These drugs include sildenafil (Viagra) and tadalafil (Cialis). Both are approved for treating erectile dysfunction and pulmonary arterial hypertension, a type of high blood pressure that affects the arteries in the lungs and heart. ED severity ranged from mild to severe and BPH severity ranged from moderate to severe. The full study population had a mean age of 63 years (range 45 to 83) and was 93% White, 4% Black, 3% other races