In teratology studies in rats and rabbits, foetal resorptions and malformations occurred in rats at 6 mg• kg-1• day-1 (including anophthalmia, agnathia, and hydrocephaly) and in rabbits at 90 mg• kg1• day-1 (including cardiovascular and renal anomalies, such as ectopia cordis and ectopic kidneys, and diaphragmatic and umbilical hernia), in the absence of maternal toxicity.