There are many benefits of IV, including: - Provides the most complete drug availability - Comes with a minimal delay of efficacy - Constant plasma concentrations can be obtained at a required level by controlling the administration rate - Unexpected side effects that occur during the period of delivery can be halted by stopping the infusion - Compounds poorly absorbed by the gastrointestinal tract may be administered intravenously to be more readily absorbed by the body - Compounds that cause a significant amount of pain when administered intramuscularly or subcutaneously may present no issues when delivered intravenously, presenting a unique advantage for this method of delivery