PROPONENTS of laetrile claim it is beneficial and safe. Opponents point to the lack of proof of its efficacy, the delay in seeking more effective therapy its use may entail, and the risk of death or illness from cyanide poisoning resulting from its use. We report the case of a patient in whom agranulocytosis developed, apparently due to laetrile.
Report of a Case
On May 10, 1980, a 61-year-old woman who had been treating herself with laetrile for five years was admitted to Greenwich (Conn) Hospital because of sudden onset of rigors with fever (temperature to 39.4 °C). She had had a simple right mastectomy with axillary lymph node dissection for infiltrating ductal carcinoma in 1966. In 1975 a second primary developed and she underwent a left modified radical mastectomy, followed by a course of fluorouracil. She received five doses of 500 mg intravenously during June and July 1975, but
Liegner KB, Beck EM, Rosenberg A. Laetrile-Induced Agranulocytosis. JAMA. 1981;246(24):2841–2842. doi:10.1001/jama.1981.03320240049025
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