What is the adult dose of epinephrine listed for emergency use?

• A. 0.3 mg
• B. 0.03 mg
• C. 3 mg
• D. 0.15 mg

Answer: (A)

In emergencies like anaphylaxis, the quick, effective dose for an adult is 0.3 mg of epinephrine given intramuscularly (1:1000 concentration). This amount provides rapid bronchodilation and vasoconstriction to counter airway swelling and shock without risking excessive cardiovascular effects. The other options are inappropriate for adults: 0.03 mg is far too small to have the needed impact, 3 mg is excessive and could cause dangerous hypertension and arrhythmias, and 0.15 mg is typically used for children or lighter adults. Therefore, 0.3 mg is the standard adult emergency dose.