RICE WB, ALLMARK MG. STIMULANT EFFECTS OF A SULFONAMIDE PREPARATION, SULFAPHENAZOLE, ON THE
CENTRAL NERVOUS SYSTEM IN RATS.
CANADIAN MEDICAL ASSOCIATION JOURNAL 1965;
92:180-1. [PMID:
14232193 PMCID:
PMC1927718]
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Abstract
Sulfaphenazole (Orisul), which had been reported to cause a convulsant syndrome in young European children, lowered the electroshock threshold in rats when administered in the form of tablets or suspension. This effect was not obtained with a sample of sulfaphenazole pure drug or with several other long-acting oral sulfonamide preparations, but was obtained with a mixture of impurities which had been found in the same lot of Orisul that had reportedly caused the convulsant syndrome. A change in the method of manufacture now provides a product which is free from these impurities.
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