ArticleScally MC, Ulus I, Wurtman RJ.
J Neural Transm. 1977;41(1):1-6.
Animals received either haloperidol (2 mg/kg) or probenecid (200 mg/kg) in conjunction with tyrosine (100 mg/kg) or its diluent. Striatal homovanillic acid levels increased in probenecid-treated animals to the same range whether they were given tyrosine or not. In haloperidol-treated animals the levels of homovanillic acid were significantly elevated in animals receiving tyrosine. Tyrosine and homovanillic acid levels were highly correlated as determined by linear regression analysis.