Reproducibility Study of the Efficiency of Packaging on Preventing Photolytic Degradation of Etnol® (Atenolol Tablet)

Abstract

This research work was conducted to describe the coating efficiency on photolytic degradation of Etnol® (Atenolol). The objective of this study was to determine the reproducibility of the effect of Atonolol in various lighting conditions (control, sunlight, normal room light, 25watt & 40watt bulb). UV spectrophotometer was used for measuring the absorbance. Besides, physical tests were performed for evaluation of color change, weight variation, thickness and hardness of the Etnol® tablets from same batch. Physical tests were performed according to the specification of USP and the standard deviation of weight variation; hardness and thickness were ±0.0155 mm, ±0.36253 kg & ±0.0025gm respectively. But it was also observed that the concentration of Atenolol was decreased gradually in various light condition (25watt & 40watt electrical bulb, sunlight, normal light) and at 25watt, 40watt, direct sunlight and normal room light exposure the degradation were observed 11.86%, 15.45%, 23.06% & 10.23% respectively. So, it can be said that packaging alone was not sufficient to protect the drug from light.