The practice of printing expiry dates on medicines began in the United States in 1979, and India soon followed suit. But growing evidence suggests that these dates may not reflect the actual shelf life of most drugs. Expiry dates merely indicate the period during which manufacturers guarantee full potency—not when a drug becomes unsafe or ineffective. In fact, a major study conducted by the US military in collaboration with the FDA found that nearly 90% of over 100 tested drugs remained safe and effective even 15 years past their printed expiry dates.
Closer to home, Indian pharmaceutical experts have noted that expiry dates are often influenced by logistical and commercial pressures rather than scientific necessity. Given India’s diverse climate and infrastructure challenges, manufacturers tend to err on the side of caution. However, this often leads to perfectly usable medicines being discarded prematurely, especially in rural areas where access to healthcare is limited.
While certain drugs like insulin, nitroglycerin, and some liquid antibiotics do degrade faster and require strict adherence to expiry dates, most medicines degrade slowly and retain much of their potency well beyond the printed date. Yet, consumers continue to discard them, unaware of the science behind drug stability.
It’s time we questioned whether expiry dates are truly about safety—or simply a clever marketing strategy. Raising awareness could save crores in unnecessary spending and reduce medical waste, especially in a country where every rupee and every dose counts.
