Fig. 19From: Smart green spectrophotometric assay of the ternary mixture of drotaverine, caffeine and paracetamol in their pharmaceutical dosage formDifferent dissolution profiles of Petro® tablets in different dissolution media in which: (a) Acetate buffer pH 4.5. (b) Phosphate buffer pH 6.8. (c) 0.1N HCl pH 1.2. (d) WaterBack to article page