Omalizumab, a monoclonal antibody, significantly increased the amount of peanut, tree nuts, egg, milk, and wheat that children with multiple food allergies could consume without allergic reactions in a clinical trial. Nearly 67% of treated participants tolerated 600 mg of peanut protein, equivalent to 2.5 peanuts, compared to less than 7% on placebo. The treatment offers potential protection against accidental exposure to allergens, reducing the risk of allergic reactions.