Intramuscular Route of Administration

**Semantic type:** Therapeutic or Preventive Procedure

**Definition:** Intramuscular injection is a route of drug administration via injection into muscle tissue. Aqueous or oleaginous solutions and emulsions or suspensions may be administered. Absorption rates, delay in availability of the drug to the systemic circulation, and duration of effect are perfusion-limited, depend on molecular size of the agent, volume, and osmolarity of the drug solution, fat content of the injection site, and patient physical activity.

**Synonyms:** - IM - IM - INTRAMUSCULAR - INTRAMUSCULAR - INTRAMUSCULAR - INTRAMUSCULAR - Intramuscular - Intramuscular - Intramuscular - Intramuscular Injection - Intramuscular use - intramuscular injection