The empirical formula for tadalafil is C 22 H 19 N 3 O 4 , and its official organic name is 6R,12aR -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
stromectol uk 0, MedCalc Software, Mariakerke, Belgium