tetrabenazine vs ziprasidone
Side-by-side comparison of tetrabenazine and ziprasidone. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
moderate Known Drug Interaction
7.5 Drugs That Cause QTc Prolongation Tetrabenazine causes a small prolongation of QTc (about 8 msec), concomitant use with other drugs that are known to cause QTc prolongation should be avoided, these including antipsychotic medications (e.g., chlorpromazine, haloperidol, thioridazine, ziprasidone), antibiotics (e.g., moxifloxacin), Class 1A (e.g., quinidine, procainamide) and Class III (e.g., amiodarone, sotalol) antiarrhythmic medications or any other medications known to prolong the QTc interval. 7.6 Neuroleptic Drugs The risk for Parkinsonism, NMS, and akathisia may be increased by...
Recommendation: You should avoid taking these drugs together to prevent heart rhythm issues and severe muscle side effects.
Xenazine
Geodon
Tetrabenazine is a medicine used to treat chorea (uncontrollable movements) caused by Huntington's disease. It helps to reduce these movements.
Ziprasidone is a medicine used to treat mental disorders. It helps to balance chemicals in the brain to improve mood and behavior.
Tetrabenazine is used to treat chorea, which are the involuntary, jerky movements that happen with Huntington's disease. Huntington's disease is a brain disorder that affects movement, behavior, and thinking. This medicine can help control the movements caused by this condition.
Ziprasidone treats schizophrenia in adults. It also treats manic or mixed episodes of bipolar I disorder, either alone or with lithium or valproate. This medicine can help manage mood swings and improve overall mental well-being.
Tetrabenazine works by affecting a substance in the brain that moves other chemicals. It lowers the amount of certain chemicals, like dopamine, in the brain. This helps to control the involuntary movements (chorea) caused by Huntington's disease.
Ziprasidone is an atypical antipsychotic. It works by affecting certain chemicals in the brain, like dopamine and serotonin. By balancing these chemicals, it helps to reduce symptoms of mental illness.
- • Feeling sleepy or drowsy
- • Feeling tired
- • Trouble sleeping
- • Feeling depressed
- • Feeling restless
- • Feeling sleepy
- • Respiratory tract infection
- • Extrapyramidal symptoms (movement problems)
- • Dizziness
- • Restlessness
- Death 1,212
- Feeling sad or hopeless 475
- Feeling sleepy or drowsy 451
- Feeling tired 360
- Falling down 316
- Gaining weight 1,176
- Diabetes 1,003
- Feeling anxious 875
- Type 2 diabetes 859
- Trouble sleeping 801
Tetrabenazine can increase the risk of depression and suicidal thoughts in people with Huntington's disease. If you have thoughts of harming yourself, tell your doctor right away. You should not take this medicine if you are actively suicidal or have untreated depression.
This medicine may increase the risk of death in elderly patients who have psychosis related to dementia. Ziprasidone is not approved to treat dementia-related psychosis. Talk to your doctor about the risks if you are an elderly patient with dementia.
This medicine may harm your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if this medicine passes into breast milk, so talk to your doctor if you are breastfeeding.
Tell your doctor if you are pregnant or plan to become pregnant. Babies born to mothers who use this medicine in the last 3 months of pregnancy may have withdrawal symptoms after birth. There is a pregnancy registry, call 1-866-961-2388.
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How to Read This tetrabenazine vs ziprasidone Comparison
tetrabenazine is classified in the VMAT2 Inhibitor drug class, while ziprasidone sits within the Atypical 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, tetrabenazine has 2,814 submissions while ziprasidone has 4,714. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known moderate interaction flagged in FDA labeling, attributed to both drugs can cause a dangerous change in the heart's rhythm and increase the risk of serious movement problems.. 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 tetrabenazine and ziprasidone - 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.