Results: This study indicates that suitable ratios of aerosil for the flowability of TL80, M102, paracetamol, amodiaquine hydrochloride, metformin hydrochloride, carvedilol, chlorpheniramine maleate are 0.2%; 0.5%; 0.5%; 0.25%; 1.0%; 1.0% and 0.1% respectively.