Mohammad Asadujjaman

The word'nano'is derived from Latin word, which means dwarf.Nano size refers to one thousand millionth of a particular unit thus nanometer is one thousand millionth of a metre.Nanotechnology is the science that deals with the processes that occur at molecular level and of nanolength scale size.There are numerous examples from nature like DNA, water molecules, virus, red blood corpuscles (RBC) etc. which are of nanodimensions;even our history has numerous examples which prove that we have exploited the advantages of technology in one or other form.The term nanotechnology has been most commonly used in other fields of science like electronic, physics and engineering since many decades. Nanotechnology has shown tremendous progress in these fields.However, biomedical and pharmaceutical fields remain yet to be explored.Nanotechnology is a multidisciplinary field, convergence of basic sciences and applied disciplines like biophysics, molecular biology, and bioengineering.It has created powerful impact in various fields of medicine including cardiology, ophthalmology, endocrinology, oncology, immunology, gene delivery, brain targeting, tumor targeting, and oral vaccine formulations.

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 .