Tadalafil Systematic (IUPAC) name (6R-trans)-6-(1,3-benzodioxol-5-yl)- 2,3,6,7,12,12a-hexahydro-2-methyl-pyrazino [1', 2':1,6] pyrido[3,4-b]indole-1,4-dione Identifiers CAS number 171596-29-5 ATC code G04BE08 PubChem 110635 DrugBank APRD00071 Chemical data Formula C22H19N3O4 Mol. weight 389.404 g/mol Pharmacokinetic data Bioavailability  ? Protein binding 94% Metabolism  ? Half life 17.5 hours Excretion  ? Therapeutic considerations P ...
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Cialis Consumer Information
... Cialis is a prescription medicine taken by mouth for the treatment of erectile dysfunction (ED) in men. ED is a condition where the penis does not harden and expand when a man is sexually excited, or ...
Source: U.S. Food and Drug Administration