Pimozide/Strong CYP2D6 Inhibitors 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:
Very Serious. These medicines may interact and cause very harmful effects and are usually not taken together. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.
How the interaction occurs:
Your medicine may slow down how quickly your body processes pimozide.
What might happen:
The amount of pimozide in your blood may increase, which may increase your risk of developing an irregular heartbeat, which may be life threatening.
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. Let your doctor know right away if you notice any irregular heartbeat or have any dizziness or fainting episodes.Your healthcare professionals may already be aware of this drug interaction and may be monitoring you for it. Do not stop start, or change the dosage of any medicine before checking with them first.
- 1.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.
- 2.Orap (pimozide) US prescribing information. Gate Pharmaceuticals August, 2011.
- 3.Paxil (paroxetine hydrochloride) US prescribing information. Apotex Technologies January, 2017.
- 4.Pexeva (paroxetine mesylate) US prescribing information. Noven Therapeutics, LLC September, 2021.
- 5.Prozac (fluoxetine hydrochloride) US prescribing information. Eli Lilly and Company August, 2023.
- 6.Sarafem (fluoxetine hydrochloride) US prescribing information. Eli Lilly and Company September, 2021.
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- 8.American Geriatrics Society 2023 updated AGS Beers Criteria for potentially inappropriate medication use in older adults. J Am Geriatr Soc 2023 Jul;71(7):2052-2081.
- 9.Phansalkar S, Desai AA, Bell D, Yoshida E, Doole J, Czochanski M, Middleton B, Bates DW. High-priority drug-drug interactions for use in electronic health records. J Am Med Inform Assoc 2012 Sep-Oct; 19(5):735-43.
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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.