Injection techniques refer to methods used to deliver medications or vaccines directly into the body using a syringe and needle. Common types include intramuscular, subcutaneous, and intravenous injections, each targeting different layers of tissue. Proper technique is essential to ensure effective delivery and minimize discomfort. Healthcare professionals are trained in these techniques to ensure safety and efficacy. Factors such as the patient's age, weight, and medical condition influence the choice of injection site and method. Following standard protocols helps reduce the risk of complications, such as infection or improper dosage.