Which gauge is recommended for aqueous intramuscular injections?

The recommended gauge for aqueous intramuscular injections is typically between 20 to 25 gauge. This size range is optimal for delivering aqueous solutions, as it strikes a balance between providing a large enough bore to allow the medication to pass through easily and minimizing discomfort for the patient.

A smaller gauge means a larger bore size; therefore, while an 18 gauge can also be used for larger volume medicines or for rapid injection, it may be too large for most aqueous solutions, potentially causing more pain or discomfort during the injection. A gauge of 22-27 is generally reserved for more delicate procedures or smaller volumes, which do not apply to standard intramuscular injections. Lastly, 25-30 gauges are too narrow for intramuscular injections of aqueous solutions as they may cause increased pressure and discomfort when administering the medication. Thus, 20-25 gauge is the preferred choice for this type of injection.