ABSTRACT
INTRODUCTION The word Parenteral is coined from the greek words “para enteron” meaning “to avoid the intestines.” Drugs administered via any route other than oral or rectal routes, are considered to be parenteral. However, common usage more closely associates the term as being synonymous with “injectable.” These include drugs that are topically administered to the eye, ear, and skin or even inhaled may be considered broadly as parenterals. It is estimated that 40% of all drugs administered in hospitals are in the form of an injection. In some institutional settings, the percentage of injectables is greater than 40%. However, medical and pharmacy practioners of today generally limit the classification of parenterals to include only those drugs administered directly into tissues, tissue spaces, or compartments by injection or infusion.
