title: The effect of cyproheptadine chlorhydrate on rat embryonic development.
abstract: The teratogenic effect of cyproheptadine chlorhydrate was studied in Wistar rats. Rats were given the substance by gastric intubation on days 6-15 of pregnancy in two experimental series. In the first series rats were treated at doses of 25 and 50 mg/kg/d and in the second one they received 15, 25 and 35 mg/kg/d. Controls received only an equivalent volume of water by the same route. Doses of 25 or more mg/kg/d are highly embryotoxic. At 15 mg/kg/d the effects were relatively minor. The major anomalies caused by the drug were edema and abnormal ossification of the ribs. Some other malformations were also found: craniorrhachischisis, cleft lip, cleft palate, hypoplastic limbs, micrognathy, micromelia, and vascular damage.
mesh_terms: D000015:Abnormalities, Multiple / Q000139:chemically induced; D000818:Animals; D003533:Cyproheptadine / Q000633:toxicity*; D004622:Embryo, Mammalian / Q000187:drug effects; D005260:Female; D005333:Fetus / Q000187:drug effects; D011247:Pregnancy; D051381:Rats; D011919:Rats, Inbred Strains; D013723:Teratogens
chemical_list: D013723:Teratogens; D003533:Cyproheptadine