The only way to prevent an allergic reaction is to avoid soy and soy proteins.
Medications, such as antihistamines, may reduce signs and symptoms of soy allergies. These drugs can be taken after exposure to soy to control your reaction and help relieve discomfort. Some over-the-counter antihistamines are: diphenhydramine (Benadryl, others), chlorpheniramine (Chlor-Trimeton, others), cetirizine (Zyrtec, others) and loratadine (Alavert, Claritin, others).
Despite your best efforts, you may still come into contact with soy. If you have a serious allergic reaction, you may need an emergency injection of epinephrine and a trip to the emergency room. If you're at risk of having a severe reaction, you may need to carry injectable epinephrine (such as an EpiPen or EpiPen Jr) with you at all times. Ask your doctor for guidance, so that you're certain you know when and how to use portable epinephrine.
May. 20, 2011
- Savage JH, et al. The natural history of soy allergy. Journal of Allergy and Clinical Immunology. 2010;6:125.
- Atkins D. Food allergy: Diagnosis and management. Primary Care: Clinics in Office Practice. 2008;35:119.
- Sicherer SH. Food allergens: Overview of clinical features and cross-reactivity. http://www.uptodate.com/home/index.html. Accessed Feb. 8, 2011.
- Keet CA, et al. Food allergy and anaphylaxis. Immunology and Allergy Clinics of North America. 2007;27:193.
- Ballmer-Weber BK, et al. Soy allergy in perspective. Current Opinion in Allergy and Clinical Immunology. 2008;8:270.
- Soy allergy. Asthma and Allergy Foundation of America. http://www.aafa.org/print.cfm?id=9&sub=20&cont=522. Accessed Feb. 8, 2011.
- Thygarahan A, et al. American Academy of Pediatrics recommendations on the effects of early nutritional interventions on the development of atopic disease. Current Opinion in Pediatrics. 2008;20:698.