Atropine Sulfate should not be taken by pets with, or predisposed to, glaucoma. Pets with a known sensitivity to drugs of this nature should not be given atropine sulphate. In cases where the ocular lens separates from its attachments within the eye, atropine sulfate should not be used. Atropine sulfate should not be taken with anticholinesterase, antihistamines, benzodiazepine, corticosteroids, phenothiazine, sympathomimetics, thiazide diuretic, amitraz, disopyramide phosphate, meperidine, metoclopramide, nitrofurantoin, primidone, procainamide, or quinidine.