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Tamil Nadu is one among the few States in India to implement the concept of essential drugs in the health care delivery system. Essential drugs are those that satisfy the health care needs of the majority of the population, meant to treat commonly prevalent diseases, they should therefore be safe, effective and should be available at low cost at all times, in adequate amounts and in the appropriate dosage forms. Essential drugs are critically required for the management of 90-95% of commonlydoi:10.18203/2394-6040.ijcmph20175310 fatcat:46xza2ji5bb3pewt2gw6bstdhi