Prescribed medication is the next step if dietary modifications and vitamin B6 therapy with doxylamine are ineffective.

如果饮食疗法与联合应用维生素b6和抗敏安无效，下一步就需要开处方药。

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For all the names, the main ingredients are the same: Vitamin B6 plus the over-the-counter antihistamine doxylamine, found in the sleep aid Unisom.

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