You should not use alprazolam if you have narrow-angle glaucoma, if you also take itraconazole or ketoconazole, or if you are allergic to alprazolam or similar medicines (Valium and others).
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Do not use alprazolam if you are pregnant. This medicine can cause birth defects or life-threatening withdrawal symptoms in a newborn.
Alprazolam may be habit-forming. Misuse of habit-forming medicine can cause addiction, overdose, or death.
Do not drink alcohol while taking alprazolam. This medication can increase the effects of alcohol. This medicine may be habit-forming and should be used only by the person for whom it was prescribed. Keep the medication in a secure place where others cannot get to it.