
It is important to remove the agent causing the reaction. Sometimes a vaccine is helpful if the allergen is identified. Life support is sometimes required, as well as opening an airway so the animal can breathe properly. In addition, fluids are often administered to reduce the animal's shock levels and to hydrate. Drugs like epinephrine are often given if the shock is severe, and antihistamines can be prescribed to help with on-going control of the allergy. The dog often requires close hospital monitoring for 24 to 48 hours after the reaction.
If it is discovered the allergic reaction was due to food, or an otherwise common allergen, efforts must be made to control the dog’s environment. As many cases are sudden, the owner will be educated so a future emergency can be managed effectively.
There are no known ways to prevent an initial reaction, but once the allergen is identified, it can be controlled by the dog's owner.