"What are benzodiazepines, and how do they work?
Benzodiazepines are a class of drugs primarily used for treating anxiety, but they also are effective in treating several other conditions. The exact mechanism of action of benzodiazepin"...
(alprazolam) Extended-Release Tablets
XANAX XR Tablets contain alprazolam which is a triazolo analog of the 1,4 benzodiazepine class of central nervous system-active compounds.
The chemical name of alprazolam is 8-chloro-1-methyl-6-phenyl-4H-s-triazolo [4,3-α] [1,4] benzodiazepine. The molecular formula is C17H13ClN4 which corresponds to a molecular weight of 308.76.
The structural formula is represented below:
Alprazolam is a white crystalline powder, which is soluble in methanol or ethanol but which has no appreciable solubility in water at physiological pH.
Each XANAX XR extended-release tablet, for oral administration, contains 0.5 mg, 1 mg, 2 mg, or 3 mg of alprazolam. The inactive ingredients are lactose, magnesium stearate, colloidal silicon dioxide, and hypromellose. In addition, the 1 mg and 3 mg tablets contain D & C yellow No. 10 and the 2 mg and 3 mg tablets contain FD&C blue No. 2.
What are the possible side effects of alprazolam (Niravam, Xanax, Xanax XR)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
- depressed mood, thoughts of suicide or hurting yourself, unusual risk-taking behavior, decreased inhibitions, no fear of danger;
- confusion, hyperactivity, agitation, hostility, hallucinations;
- feeling like you might pass out;
- urinating less than usual or not at all;
- chest pain, pounding heartbeats...
What are the precautions when taking alprazolam (Xanax XR)?
Before taking alprazolam, tell your doctor or pharmacist if you are allergic to it; or to other benzodiazepines (such as diazepam, lorazepam); 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: severe lung/breathing problems (such as COPD, sleep apnea), liver disease, kidney disease, drug or alcohol abuse, glaucoma.
This drug may make you dizzy or drowsy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Avoid alcoholic beverages.
Before having surgery, tell your...
Last reviewed on RxList: 12/13/2013
This monograph has been modified to include the generic and brand name in many instances.
Additional Xanax XR Information
Xanax XR - User Reviews
Xanax XR User Reviews
Now you can gain knowledge and insight about a drug treatment with Patient Discussions.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Get tips on therapy and treatment.