Colchicine/Strong CYP3A4 Inhibitors; Atazanavir 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.
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:
Your medicine may slow down how quickly your intestine and liver process colchicine.
What might happen:
The amount of colchicine in your blood may increase and cause toxic side effects. Deaths have been reported.
What you should do about this interaction:
Let your healthcare professionals (e.g. doctor or pharmacist) know right away that you are taking these medicines together or if you have taken your other medicine in the previous 14 days. Make sure your doctor knows if you have any kidney or liver problems, which may make the interaction worse. Your doctor may need to change your medicine or the dose of your colchicine. Let your doctor know right away if you have any unexplained muscle weakness or pain, numbness or tingling in the fingers or toes; unusual bleeding or bruising; abdominal pain; nausea; severe diarrhea or vomiting; feeling weak or tired; increased infections; or pale or gray color of the lips, tongue, or palms of hands.Your healthcare professionals may already be aware of this interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.
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- 10.US Food and Drug Administration (FDA). Drug Development and Drug Interactions: Table of Substrates, Inhibitors and Inducers. Available at: https://www.fda.gov/drugs/drug-interactions-labeling/drug-development-and -drug-interactions-table-substrates-inhibitors-and-inducers. Updated 11/14/2017.
- 11.Reyataz (atazanavir sulfate) US prescribing information. Bristol-Myers Squibb Company September, 2020.
- 12.Prezista (darunavir) US prescribing information. Tibotec Inc. May, 2019.
- 13.Crixivan (indinavir sulfate) US prescribing information. Merck & Co., Inc. September, 2016.
- 14.Kaletra (lopinavir/ritonavir tablets) US prescribing information. Abbott Laboratories December, 2019.
- 15.Viracept (nelfinavir mesylate) US prescribing information. Agouron Pharmaceuticals, Inc. September, 2016.
- 16.Norvir (ritonavir) US prescribing information. Abbott Laboratories December, 2019.
- 17.Invirase (saquinavir mesylate) US prescribing information. Roche Laboratories, Inc. March, 2019.
- 18.Aptivus (tipranavir) US prescribing information. Boehringer Ingelheim Pharmaceuticals, Inc. June, 2020.
- 19.Victrelis (boceprevir) US prescribing information. Schering Corporation January, 2017.
- 20.Incivek (telaprevir) US prescribing information. Vertex Pharmaceuticals Incorporated October, 2013.
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.