For intramuscular (IM) injections in adults, a needle length of 1"–1½" and a gauge of 22–25 is typically used. However, the specific needle length may vary depending on the patient's weight. The deltoid muscle is the most common injection site for adults.
Additional Notes:
- The anterolateral thigh muscle is an alternative IM injection site for adults.
- It's crucial to use sterile and disposable needles and syringes for each injection.
- Always consult with a healthcare professional for guidance on needle selection and injection techniques.
