The department or service in a hospital which is under the direction of a professionally competent , legally qualified pharmacist , and from which all medications are supplied to the nursing and other services, where special prescriptions are filled for patients in the hospital, where prescriptions are filled for ambulatory patients, and out-patients, where pharmaceuticals are manufactured in bulk, where narcotic and other prescribed drugs are dispensed , where biologicals are stored and dispensed, where inject able preparation s should be prepared and sterilized ,and where professional supplies are often stocked and dispensed.The presence of adequate pharmaceutical personnel in many hospitals has benefited both patient and staff members, for hospital manufacture of various pharmaceutical products as well as parenteral product solution has reduce the cost of medication. The member of the staff to prescribe mixtures which require compounding skill. Also hospitals pharmacist have become involved in the preparation of hyperalimentation products, dialysis fluids, intravenous additive programs, unit dose packaging and unit dose dispensing .