• Harold S Nelson.
• National Jewish Health, Denver, Colorado 80206, USA. nelsonh@njhealth.org
• Curr Opin Allergy Clin Immunol. 2009 Dec 1; 9 (6): 549-53.

Purpose Of ReviewThe purpose is to review the published evidence for the use of multiallergen mixes in subcutaneous and sublingual immunotherapy.Recent FindingsData are drawn from published articles and reviews, including a recent complete search of the English and non-English literature for publications on multiallergen immunotherapy.The problems arising from dilution of extracts and degradation of extracts resulting from adding additional extracts to a mixture are confirmed. The published literature of the use of multiallergen extracts in subcutaneous and sublingual immunotherapy indicates that multiallergen extracts are effective when given by injection, but a similar efficacy has not been established for them when administered sublingually.SummaryMultiallergen extract mixes are probably effective for subcutaneous immunotherapy provided attention is paid to the concentration of each allergen in the mix and mixing of protease containing extracts with pollen and dander extracts is avoided. Further studies are needed to determine if multiallergen mixes are effective in sublingual immunotherapy.

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