I recently read an article wherein it said that the medicines, don't lose their complete effect, post the expiry date. The potency is reduced just by a small percentage. Let me elaborate. If a medicine claims to have a 3 year shelf life and if you want to use the medicine two years after the expiry life, you can go ahead. The effect of the medicine to your ailment will 80-90%. It's a marketing strategy by the Pharmaceutical companies to make us customers buy new medicines.
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