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  • Title: Action of the phenothiazine derivative methophenazine on prenatal development in rats.
    Author: Horvath C, Druga A.
    Journal: Teratology; 1975 Jun; 11(3):325-9. PubMed ID: 1154295.
    Abstract:
    Single doses of 100-400 mg/kg or multiple doses of 10 or 50 mg/kg of the phenothiazine derivative methophenzaine were given per osto Wistar rats at various times on the 7th-14th days fo gestation and the fetuses examined near term. Results indicated that methophenazine was mainly embryolethal when administered on the 8th-11th days, and was teratogenic at later times, producing types of malformations that depended on the day of treatment, the most susceptible period being the 13th and 14th days of gestation. Teratogenicity occurred only when the dosages were highly toxic to the pregnant rats. Ribovlavin given ip on the 14th day significantly reduced the embryolethal but not the teratogenic action of methophenazine.
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