Selected Protease Inhibitors/Alprazolam Interactions

This information is generalized and not intended as specific medical advice. Consult your healthcare professional before taking or discontinuing any drug or commencing any course of treatment.

Medical warning:

Serious. These medicines may interact and cause very harmful effects. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.

How the interaction occurs:

When these two medicines are taken together, your body may not process your alprazolam properly.

What might happen:

The blood levels of alprazolam may increase. This may cause toxic effects such as drowsiness, slurred speech, incoordination, or difficulty breathing.

What you should do about this interaction:

Contact your healthcare professionals (e.g. doctor or pharmacist) as soon as possible about taking these two medicines together. They may already be aware of this drug interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.

  • 1.Xanax (alprazolam) US prescribing information. Pharmacia & Upjohn Company February, 2021.
  • 2.This information is based on an extract from the Certara Drug Interaction Database (DIDB) Platform, Copyright Certara 1999-2023..
  • 3.Panel on Antiretroviral Guidelines for Adults and Adolescents. Guidelines for the use of antiretroviral agents in adults and adolescents Living with HIV. Department of Health and Human Services. Available at https://clinicalinfo.hiv.gov/en/guidelines/adult-and-adolescent-arv/whats- new-guidelines June 13, 2021.
  • 4.Frye R, Bertz R, Granneman GR, Qian J, Lamm J, Dennis S, Valdes J. Effect of ritonavir on the pharmacokinetics and pharmacodynamics of alprazolam. 37th Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC), Toronto, Canada 1997;37:12.
  • 5.Greenblatt DJ, von Moltke LL, Harmatz JS, Durol AL, Daily JP, Graf JA, Mertzanis P, Hoffman JL, Shader RI. Alprazolam-ritonavir interaction: implications for product labeling. Clin Pharmacol Ther 2000 Apr; 67(4):335-41.

Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except as may be authorized by the applicable terms of use.

CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.