Corticosteroids block the immune system response to the allergen. Corticosteroids are given through an intravenous line, in combination with antihistamines and epinephrine. After initial treatment, anaphylaxis requires additional treatment with oral corticosteroid, for 1-2 weeks.

Examples include:

• Decadron
• Medrol
• Solu-Medrol
• Pediapred
• Prednisone