A technique of administration in which the drug bypasses the gastrointestinal (GI) tract (i.e., intramuscular (IM), intravenous (IV), intranasal (IN), submucosal (SM), subcutaneous (SC), intraosseous (IO)).
Administration by intravenous, subcutaneous or intramuscular routes.
Administration of medicinal substances by injection (i.v.= intravenous; i.m. = intramuscular; s.c. = subcutaneous) or intravenous drip.
Administration of drugs by routes other than via the alimentary canal: by injection, transdermally, topically, and so on.