• Epi 1:10,000 (0.1mg/ml) 0.1-0.3mg SIVP only when severe hypotension and/or hypoxia justify the cardiovascular risk of IV Epi administration
• Epi 1:1,000 (1mg/ml) drip for refractory hypotension 2-10mcg/min, discontinue >110mmHg
• In a small percentage of cases anaphylaxis may present without oral swelling or urticaria, presenting only with unexplained hypotension
• Biphasic and protracted reactions occur in up to 20% of cases hours after resolution of initial reaction and without re-exposure to allergen