
Parenteral drugs are called the dosage forms that are intended for administration of medicine as injection or infusion. Parenteral form refers to administration of medications skipping the digestive system, rather injected or infused via intravenous or intramuscular mode of delivery. There are four most common delivery routes for parenteral drug administration including intravenous (IV) route, intraosseous infusion, subcutaneous route and intramuscular route. In Intravenous route of drug delivery, medicines or medicinal fluids are directly injected into patient's vein. However, subcutaneous parenteral drug is given under the skin and intramuscular parenteral drug is injected into muscle. The intravenous (IV) administration route for parenteral drug delivery is highly preferred over other delivery routes. Though solid dosage medicinal products are still prevailing in the market, parenteral drugs despite being a small molecule or a biologic-based drug is expected to increase their revenue share in the overall drug market.