What is the maximum dose of Epi for adults in anaphylaxis?

The maximum dose of epinephrine for adults experiencing anaphylaxis is crucial for effective treatment. The correct dosage is typically 0.3mg to 0.5mg via intramuscular injection, administered every 5 to 15 minutes as needed, depending on the severity of the reaction and the clinical response. This is based on established protocols aimed at mitigating the effects of anaphylaxis, such as bronchospasm and hypotension, through the actions of epinephrine on adrenergic receptors.

The choices provided include a range of dosages, but the correct choice reflects the upper limit of the standard dosing guidelines for adults. This ensures that patients receive sufficient medication to counteract anaphylaxis without exceeding safe limits. 0.9mg and 2mg exceed the typical recommendations and could lead to adverse effects or complications—hence why they are not considered appropriate in most situations.