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D-penicillamine is dimethyl cysteine, a new oral chelating agent derived from penicillin, but lacking antibacterial effects. Although it is marketed chiefly for use in Wilson's disease, it shows promise in the treatment of other metal intoxications, and in preventing stone formation in cystinuria. In Britain D-penicillamine hydrochloride is marketed by Dista Products.

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  • * Based on material published on August 2, 1963 in The Medical Letter, New York.