One of the studies describes the exact doses: > AR101, a powder, was administered in graduated doses ... from capsules containing 0.5, 1, 10, 20, or 100 mg of

One of the studies describes the exact doses: > AR101, a powder, was administered in graduated doses ... from capsules containing 0.5, 1, 10, 20, or 100 mg of peanut protein, formulated with bulking and flow agents ... Study product was consumed after opening the capsules and mixing its content into an age-appropriate, nonallergenic, vehicle food (eg, applesauce, pudding). https://www.jaci-inpractice.org/article/S2213-2198(17)30742-0/pdf https://www.jaci-inpractice.org/article/S2213-2198(17)30742-... Their website claims that 1 peanut is 250-300 mg peanut protein. https://www.aimmune.com/ar101-peanut-allergy/ https://www.aimmune.com/ar101-peanut-allergy/ So while $4,200 might be a bit high, there is probably still some value in isolating a 1/500 peanut dose.