acamprosate vs pimozide
Side-by-side comparison of acamprosate and pimozide Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Campral
Orap
Acamprosate is a medicine that can help you stay away from alcohol if you are alcohol-dependent and have already stopped drinking. It should be used with counseling and support.
Pimozide (Orap) is a medicine that helps control tics in people with Tourette's Disorder. It works by affecting certain chemicals in the brain.
Acamprosate helps people who are alcohol-dependent to not drink alcohol. You must have already stopped drinking before you start taking acamprosate. This medicine works best when it is part of a complete treatment plan that includes counseling and support.
Pimozide is used to treat motor and phonic tics in people with Tourette's Disorder. It is for people who have not had success with other treatments. This medicine is not for tics that are mild or just annoying. It is meant for people whose tics greatly affect their daily life.
Acamprosate is similar to a natural substance in your brain. It is thought to work by helping to restore the normal balance of brain activity that is changed by long-term alcohol use. This can reduce your craving for alcohol.
Pimozide belongs to a class of drugs called antipsychotics. It works by blocking dopamine, a chemical in the brain. By blocking dopamine, pimozide helps to reduce tics.
- • Accidental injury
- • Weakness
- • Pain
- • Loss of appetite
- • Diarrhea
- • Parkinson-like symptoms (tremors, stiffness)
- • Restlessness
- • Muscle stiffness
- • Drowsiness
- Low blood pressure 14
- Weakness 13
- Condition worsened 13
- Using the medicine for something it is not approved for 13
- Sudden kidney damage 12
- Interaction with another medicine 76
- Medicine not working 46
- Parkinson-like symptoms 42
- Weight gain 37
- Sleepiness 33
Acamprosate may increase the risk of suicidal thoughts or actions. Your doctor should watch you for depression or suicidal thoughts. Tell your doctor right away if you have any new or worsening symptoms of depression or suicidal thoughts.
Pimozide can cause changes in your heart rhythm (QT prolongation). This can lead to serious heart problems. You should have an ECG (heart test) before starting pimozide and regularly during treatment. Do not take pimozide with other medicines that can also affect your heart rhythm.
Acamprosate may harm your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if acamprosate passes into breast milk. Talk to your doctor if you are breastfeeding.
Tell your doctor if you are pregnant or plan to become pregnant. It is not known if pimozide will harm your unborn baby. Talk to your doctor about the risks and benefits of taking pimozide during pregnancy and breastfeeding.
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How to Read This acamprosate vs pimozide Comparison
acamprosate is classified in the GABA Analog (Alcohol Dependence) drug class, while pimozide sits within the Typical Antipsychotic class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, acamprosate has 65 submissions while pimozide has 234. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between acamprosate and pimozide — always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.