The higher the dosage of valproate a woman had taken, the lower the IQ of the child, the researchers found. For the other drugs, dosage levels made no significant difference.

• 研究表明，一个妇女服用这种抗癫痫药物的剂量越高，他的孩子的智商越低。但是其它的药物，剂量的多少没有明显的区别。