RT Journal A1 SHERRILL JW, MacKAY EM T1 DEleterious effects of experimental protamine insulin shock JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1939 FD November 1 VO 64 IS 5 SP 907 OP 912 DO 10.1001/archinte.1939.00190050013002 UL http://dx.doi.org/10.1001/archinte.1939.00190050013002 AB The effects of hypoglycemia of long duration on the various tissues and on the organism as a whole are of fundamental importance. On the immediate practical side, the possibility of the use of excessive doses of the slowly acting protamine insulin by untrained persons (because of the lack of rapid action) or the accidental administration of the concentrated precipitate from a vial which has not been agitated makes essential a knowledge of the effects of hypoglycemia due to insulin shock. Insulin shock is being purposely used in the treatment of schizophrenia,1 and undesirable effects of this use are also important.In all of the experiments recorded here protamine zinc insulin of a strength of 40 units per cubic centimeter was used. It was administered subcutaneously. During some experiments2 in which hyperalimentation was produced in albino rats by injections of protamine insulin, the first peculiar effects of hypoglycemia of