A simple, precise and accurate spectrophotometric method has been developed for simultaneous estimation of beclomethasone dipropionate and formoterol fumarate dihydrate using Q-absorption equation method. λmax of beclomethasone dipropionate and iso-absorptive point were found to be 239.2 nm and 232 nm respectively using methanol. Beer’s lambert’s law was obeyed over the concentration range of 1-6 μg/ml and 10-50 μg/ml for formoterol fumarate dihydrate and beclomethasone dipropionate respectively. A method is successfully applied on rotacaps. Developed methods were validated according to ICH guidelines.
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