<prompt> Essential drug is?Drugs that has been developed specifically to treat a rare medical conditionThose drugs that satisfy the health care needs of the majority of the populationThose drugs that satisfy the health care needs of at least 50 of the populationDrug that is to be used with in first hour of the acute attack of the disease  <response>: ANSWER: B Those drugs that satisfy the health care needs of the majority of the populationREF: KDT 6th edition page 5Essential drugs medicines, as defined by the World Health Organization WHO are those drugs that satisfy the health care needs of the majority of the population; they should therefore be available at all times in adequate amounts and in appropriate dosage forms, at a price the community can afford. 