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The recommended starting dose of Cialis for use as needed in most patients is 10 mg, taken prior to anticipated sexual activity.Clinical Studies uses for cialis

Guanylate Cyclase (GC) Stimulatorsantifungal medicine such as ketoconazole or itraconazole;

how often can you take viagra Men who use Cialis should be healthy enough to have sex, not take nitrates for chest pain (angina), and consult a physician if an erection lasts more than four hours or is painful.Hepatic Impairment: In volunteers with hepatic impairment (Child-Pugh Class A and B), sildenafil clearance was reduced, resulting in increases in AUC (85%) and Cmax (47%) compared to age-matched volunteers with no hepatic impairment. The pharmacokinetics of sildenafil in patients with severely impaired hepatic function (Child-Pugh Class C) have not been studied [see Dosage and Administration (2.5), and Use in Specific Populations (8.7)].No significant interactions were shown with tolbutamide (250 mg) or warfarin (40 mg), both of which are metabolized by CYP2C9.

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viagra dose View Frightful (But Dead Serious) Drug Side EffectsFor those taking ritonavir (Norvir), and other medications to treat HIV, the recommended dose is 25 mg before sexual activity, and the maximum dose is 25 mg within a 48-hour period.Separated by 6 Hours,These medicines may be affected by CIALIS or may affect how well it works. You may need different amounts of your medicines or you may need to take different medicines.

Published Online: April 7, 2014. doi:10.1001/jamainternmed.2014.594.