Is doxylamine succinate in same family of drugs as Valium?

No, doxylamine succinate and Valium (diazepam) are not in the same family of drugs. Doxylamine is an antihistamine commonly used as a sleep aid and for allergy relief, while Valium is a benzodiazepine used to treat anxiety, muscle spasms, and seizures. They have different mechanisms of action and are prescribed for different medical conditions.