Does a lower dose of peanut oral immunotherapy work as well?
Short answer
Early results say it may. In a McGill and SickKids trial of 51 children, 13 of 17 on a 30 mg daily dose and 10 of 17 on 300 mg passed a 443 mg peanut challenge at one year, compared with none avoiding peanut. The lower dose had fewer reactions.
The trial randomly assigned 51 peanut-allergic children, median age 10, to a maintenance dose of 30 mg or 300 mg of peanut protein a day, or to avoiding peanut. The one-year results were published in 2026 in The Journal of Allergy and Clinical Immunology: In Practice. Both doses raised the amount of peanut children could eat compared with avoidance, and the 30 mg group had fewer whole-body reactions.
At the CSACI meeting in October 2026, the team presented 21-month results: peanut-specific IgG4 kept rising while IgE changed little on both doses, a pattern the authors say may support similar clinical results from the lower dose.
A lower dose could mean a simpler, easier routine. It doesn't mean the allergy is gone: children on both doses were still in treatment. Keep carrying epinephrine unless your allergist says otherwise, and ask whether low-dose OIT fits your child.
Sources
- Peanut oral immunotherapy using 30 mg and 300 mg maintenance doses (Upton JEM, et al.), The Journal of Allergy and Clinical Immunology: In Practice (2026)
- Poster: Both 30 mg and 300 mg peanut oral immunotherapy maintenance doses induce sustained serologic improvement at 21-month exit challenge (Toscano-Rivero D, Upton JEM, et al.), 81st CSACI Annual Scientific Meeting, Toronto (2026)
- 81st Annual CSACI Scientific Meeting, Toronto, October 15 to 18, 2026, Canadian Society of Allergy and Clinical Immunology (2026)
Fact-checked by Western Allergy Services Ltd., Canadian allergy company since 1972, on October 30, 2026. Last updated October 30, 2026. How we check our answers
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General information, not medical advice. Always follow the instructions that come with your medication and the advice of your pharmacist or doctor. In an emergency, call 911. Medical disclaimer