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Zolpidem Medication Description DescriptionZolpidem, sold under the brand name Ambien, among others, is a medication primarily used for the short term treatment of sleeping problems. Guidelines recommend that it be used only after counseling and behavioral changes have been tried. Formula: C19H21N3O Duration of action: 3 hours Drug class: Imidazopyridine (Z-drug), nonbenzodiazepine, hypnotic Other names: Zolpidem tartrate Trade name: Ambien, others Bioavailability: 70% (by mouth) Elimination half-life: 2.5–3 hours