Summary
Six atopic subjects received either adrenaline (0.3 ml of 1 mg/ml), subcutaneously over the deltoid muscle, or saline on 2 separate days. After 10 min, histamine and antigen were injected intradermally in the forearm. Adrenaline significantly inhibited the flare of histamine and both the flare and weal of antigen (P< 0.05). This anti‐allergic action of adrenaline occurred with a dose that we have previously shown produces plasma concentrations at the upper limit of the physiological range in resting normal subjects.