The present study describes a simple, accurate, precise and cost effective UV‐VIS Spectrophotometric method for the estimation of Olopatadine, an
antihistaminic, with selective H1‐receptor antagonist activity, in bulk and pharmaceutical dosage form. The solvent used was methanol and 0.1N
HCl (50:50) and the λmax or the absorption maxima of the drug was found to be 206nm. A linear response was observed in the range of 2‐10μg/ml
with a regression coefficient of 0.9999. The method was then validated for different parameters as per the ICH (International Conference on
Harmonization) guidelines. This method can be used for the determination of Olopatadine in quality control of formulation without interference of
the excipients. Olopatadine Hydrocloride was subjected to stress degradation under different conditions recommended by ICH. The samples so
generated were used for degradation studies using the developed method