effets indesirables levitra Non limiting examples of suitable solvent acid mixtures include methanol HCl, ethanol HCl, propanol HCl, isopropanol HCl, methanol sulfuric acid, methanol phosphoric acid, ethanol sulfuric acid, ethanol phosphoric acid, propanol sulfuric acid, propanol phosphoric acid, isopropanol sulfuric acid, isopropanol phosphoric acid, methanol acetic acid, ethanol acetic acid, propanol acetic acid, isopropanol acetic acid, methanol formic acid, ethanol formic acid, propanol formic acid, and isopropanol formic acid