According to a study published in The Lancet Child & Adolescent Health, a combination of probiotics with peanut oral immunotherapy (PPOIT) effectively treated peanut allergy four years after treatment.

Researchers said PPOIT-treated participants who achieved short-term tolerance at the end of the original trial, 80% were still eating peanut, and 70% had long-lasting challenge-proven tolerance 4 years after stopping treatment.

“These findings suggest our treatment is effective at inducing long-term tolerance, up to 4 years after completing treatment, and is safe […] It also suggests the exciting possibility that tolerance is a realistic target for treating food allergy,” researchers said.