Chemically, zolpidem is N,N,6-trimethyl-2-p-tolylimidazo[1,2-a] pyridine-3-acetamide L-(+)-tartrate (2:1). It has the following structure:
Zolpidem tartrate is a white to off-white crystalline powder that is sparingly soluble in water, alcohol, and propylene glycol. It has a molecular weight of 764.88.
Each Ambien (zolpidem tartrate) tablet includes the following inactive ingredients: hydroxypropyl methylcellulose, lactose, magnesium stearate, micro-crystalline cellulose, polyethylene glycol, sodium starch glycolate, and titanium dioxide. The 5 mg tablet also contains FD&C Red No. 40, iron oxide colorant, and polysorbate 80.
Zolpidem may cause a severe allergic reaction. Stop taking zolpidem and get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using zolpidem and call your doctor at once if you have any of these serious side effects:
Before taking zolpidem, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, liver disease, mental/mood problems (such as depression, thoughts of suicide), personal or family history of regular use/abuse of drugs/alcohol/other substances, lung/breathing problems (such as chronic obstructive pulmonary disease-COPD, sleep apnea), a certain muscle disease (myasthenia gravis).
Since this drug makes you drowsy, do not drive, use machinery, or do any activity that requires alertness...