pimozide Side Effects
Also known as: Orap
Analysis of 463 adverse event reports submitted to the FDA from 2004 to 2025.
Total Reports
463
Death-Related
79
17.1% of reports
Hospitalizations
173
37.4% of reports
Top Indication
Product Used For Unknown Indication
Most Reported Adverse Reactions
Who Reports Side Effects
Gender Distribution
Age Distribution
Reporting Trend by Year
Reactions in Death Reports
Top reactions reported in 79 reports where death was an outcome. These are voluntarily reported and do not establish causation.
| Reaction | Reports |
|---|---|
| DRUG INTERACTION | 20 |
| DEATH | 16 |
| TOXICITY TO VARIOUS AGENTS | 14 |
| CARDIO-RESPIRATORY ARREST | 13 |
| DYSMORPHISM | 12 |
| ATRIOVENTRICULAR SEPTAL DEFECT | 11 |
| FOETAL EXPOSURE DURING PREGNANCY | 10 |
| CARDIAC ARREST | 8 |
| COMPLETED SUICIDE | 8 |
| FOETAL DEATH | 8 |
| MEGACOLON | 7 |
| ARRHYTHMIA | 6 |
| HYPERTELORISM OF ORBIT | 6 |
| SUDDEN CARDIAC DEATH | 6 |
| EXTRAPYRAMIDAL DISORDER | 5 |
| ILEUS PARALYTIC | 5 |
| OFF LABEL USE | 5 |
| PLACENTAL INFARCTION | 5 |
| CARDIAC FAILURE | 4 |
| END STAGE RENAL DISEASE | 4 |
Reactions in Hospitalization Reports
Top reactions in 173 reports where hospitalization was an outcome.
| Reaction | Reports |
|---|---|
| NEUROLEPTIC MALIGNANT SYNDROME | 24 |
| DRUG INTERACTION | 23 |
| PARKINSONISM | 18 |
| WEIGHT INCREASED | 17 |
| DRUG INEFFECTIVE | 16 |
| OFF LABEL USE | 16 |
| ELECTROCARDIOGRAM QT PROLONGED | 15 |
| SUICIDE ATTEMPT | 13 |
| CONDITION AGGRAVATED | 12 |
| FALL | 11 |
| EXTRAPYRAMIDAL DISORDER | 10 |
| FATIGUE | 10 |
| TOXICITY TO VARIOUS AGENTS | 10 |
| HYPOTENSION | 9 |
| LETHARGY | 9 |
| TIC | 9 |
| ANXIETY | 8 |
| CATATONIA | 8 |
| DEPRESSION | 8 |
| DIARRHOEA | 8 |
Nearby — Related Medications
What the FAERS Data Reveals About pimozide Side Effects
The FDA Adverse Event Reporting System (FAERS) contains 463 voluntary reports linked to pimozide and its brand equivalents (Orap), spanning 2004 through 2025. Of those, 79 (17.1%) listed death as an outcome and 173 (37.4%) involved hospitalization. The most common indication reported alongside adverse events was Product Used For Unknown Indication.
Demographic breakdowns help contextualize who is being exposed to the drug. Of reports with known sex, 41% were female and 57% male; age distribution skews toward 45-64, with 108 reports in that bracket. The single most reported reaction is drug interaction with 76 submissions, followed by drug ineffective and parkinsonism.
FAERS is a signal-detection tool, not a scorecard. Reports are voluntary, and a single case may list multiple suspect drugs, so numbers above should not be read as incidence rates or per-patient risk. Widely prescribed drugs naturally accumulate more reports than niche therapies even when individual risk is low. These aggregates are useful for spotting patterns that merit further pharmacovigilance, not for choosing between medications. This page is for educational reference only and is not medical advice — speak with a licensed clinician about any side-effect concerns.
Read our methodology — how this data is sourced, computed, and verified.