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Does Sertraline Hydrochloride Interact with Pimozide?

Sertraline Hydrochloride and Pimozide have a contraindicated drug interaction according to U.S. FDA drug labeling data. Concomitant use increases pimozide plasma concentrations, increasing risk of QTc prolongation and ventricular arrhythmias. The mechanism involves increased pimozide concentrations due to narrow therapeutic index. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This information is based on official FDA drug labeling sourced from OpenFDA and the NIH National Library of Medicine.

Severity
Contraindicated
Pimozide Class
Typical Antipsychotic
Management
Do not take together
Data Source
U.S. FDA via OpenFDA

How This Interaction Works

The interaction between Sertraline Hydrochloride and Pimozide occurs because increased pimozide concentrations due to narrow therapeutic index. Clinically, this means concomitant use increases pimozide plasma concentrations, increasing risk of qtc prolongation and ventricular arrhythmias. Because of the severity of this interaction, these medications are contraindicated — meaning they should not be taken together under any circumstances. If you are currently taking both, contact your healthcare provider immediately to discuss alternatives.

What To Tell Your Doctor or Pharmacist

If you are taking Sertraline Hydrochloride and your doctor is considering prescribing Pimozide (or vice versa), make sure to:

  • Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
  • Ask whether the benefits of combining these medications outweigh the risks for your specific situation
  • Ask what symptoms to watch for that would indicate the interaction is causing problems
  • Ask about alternative medications that do not interact with your current regimen
  • Ask how frequently you should be monitored while these are co-prescribed
  • Never stop or change either medication without first consulting your healthcare provider
💊 Sertraline Hydrochloride(Sertraline Hydrochloride)+💊 Pimozide(Pimozide)

Severity & Interaction Details

⛔
contraindicated
Avoid this combination
FDA labeling lists this pair as contraindicated. The risk outweighs the benefit in nearly all cases.
Severity scale
MinorContra
On record
Yes
Drug A class
—
Drug B class
Typical Antipsychotic
Source
NLP:sertraline hydrochloride

What this means in plain English

Concomitant use increases pimozide plasma concentrations, increasing risk of QTc prolongation and ventricular arrhythmias.

What the FDA label says

"Increased pimozide concentrations due to narrow therapeutic index"

📖 Source: NLP:sertraline hydrochloride

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Data sourced from U.S. FDA drug labeling via openFDA and the NIH National Library of Medicine. For informational purposes only. Always consult your pharmacist or physician.