Brand name for processed peanut flour, AR101 (now called PTAH – PeanuT Arachis Hypogaea), used for peanut immunotherapy.

Defatting process supports storage conditions, pharmaceutical processing for protein content and consistency, and may remove some of the peanut flavour.

NHS England has approved it for use but only in 600 children in the first year, then 2000 the year after.

Aim is not to “cure” peanut allergy, though – but to “mitigate against severe reactions” (ie anaphylaxis) if you accidentally come into contact with peanut.