b) Subcutaneous, 25-50 mg, 50 mg, 10 Minutes, 1 Dose
In the context of moderate to severe allergic reactions, the administration of diphenhydramine is commonly done via the subcutaneous route. The recommended dose is typically 25-50 mg, with a maximum single dose of 50 mg. The administration is usually performed over a period of 10 minutes, and generally, only one dose is given unless otherwise directed by medical professionals. Always follow specific medical protocols and consult with healthcare providers for accurate and situation-specific information.