RT Journal Article SR Electronic T1 Huntington's chorea and tryptophan JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 510 OP 513 DO 10.1136/jnnp.35.4.510 VO 35 IS 4 A1 W. R. McLeod A1 D. J. De L. Horne YR 1972 UL http://jnnp.bmj.com/content/35/4/510.abstract AB Daily use of 7 g l-tryptophan and 70 mg pyridoxine for 14 days led to no deterioration of objectively measured manual motor skills in a small group of patients with Huntington's chorea.