It was phenytoin -- three times the usual does.

但她不是在宴会上被下药的。

Medications like phenytoin, an anticonvulsant, uses liver and kidney hydroxylase enzymes for its own metabolism, so especially with long term use, there's not enough vitamin D being generated.

苯妥英，一种抗惊厥药物，会占用肝肾的羟化酶用于药物代谢，所以对于尤其是长期用该药的患者，其维生素D生成可能不足。