Results from a small study of the treatment rivaled a similar treatment that also builds allergy tolerance by exposing sufferers to small, daily doses of an allergen. The delivery method through the mouth’s mucous membrane means that much smaller doses can be used than with the oral treatment. The FDA is expected to review the license for peanut capsules in September.
Source: https://www.sciencenews.org/article/oral-drops-could-one-day-protect-people-peanut-allergies