Alum-precipitated < Extractopedia
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A process whereby an aqueous allergen extract is allowed to complex with an aluminum salt complex (e.g., aluminum hydroxide). Alum-precipitation functions as an adjuvant, which enables the extract to elicit an immunological response. In addition, the alum-allergen complex produces a depot effect, where the allergen is more slowly released into the body. This slow release formulation improves treatment tolerability, especially among highly sensitive patients.