thoughtscape NP Psychiatry · Patient education
Pimavanserin
Nuplazid
For hallucinations and delusions related to Parkinson's disease. The aim is less distress and safer daily life, not simply making you sleepy.
Draft for review · Clinical content has not been revalidated for this website.
For patients and care partners. Use the dose on your own prescription.
What it is used for
May reduce seeing or hearing things that others do not, or strongly held beliefs that are not based in reality, when related to Parkinson's disease.
It does not treat movement symptoms or cure dementia. It is not approved for every cause of confusion or psychosis.
How it works
It acts mainly on a serotonin receptor involved in brain signaling. Unlike many antipsychotics, it does not meaningfully block dopamine D2 receptors.
This helps explain why it can be useful in Parkinson's disease. The diagram is not a promise of benefit, and motor symptoms and balance still need attention.
What to expect over time
FIRST DAYS
Keep the prescribed daily routine. It is not a quick extra dose for an upsetting episode.
AROUND WEEKS 4-6
Benefit may become clearer. Track how often symptoms occur and how distressing they are.
AT FOLLOW-UP
Review benefit, confusion, swelling, and walking. Get help sooner for severe or sudden changes.
Taking your medication
The usual dose is one 34 mg capsule daily. Certain interacting medicines require a prescribed 10 mg tablet instead. Do not make that change yourself.
Swallow the capsule, or sprinkle all its contents on 1 tablespoon of applesauce, yogurt, pudding, or liquid nutritional supplement. Take immediately without chewing; do not save the mixture.
If a dose is missed, take it when remembered unless the next is near; skip then. Never double. Discuss stopping or several missed doses with your care team.
When to get help
Emergency: fainting with a racing/irregular heartbeat, collapse, trouble breathing, or tongue/face swelling. Call 911.
Call promptly: new confusion, worsening hallucinations, a change in heartbeat, trouble walking, or a fall. Sudden severe confusion needs urgent assessment.
Immediate danger: if symptoms put anyone at risk, seek emergency help. Do not take an extra dose to manage the situation.
Early side effects
Swelling, nausea, constipation, confusion, or sleepiness can occur. Tell your team if these interfere with eating, walking, or daily activities.
Other effects to discuss
Motor symptoms did not worsen on average in a six-week trial, but individual problems can occur. Report new unsteadiness or unusual movements.
What to keep track of
Bring notes on hallucinations, beliefs, sleep, and function. A care partner can help spot changes. Your clinician may check heart rhythm or blood salts when your risks or symptoms call for it.
Before you start
Discuss fainting, an irregular/slow heartbeat, a personal or family history of long QT, low potassium/magnesium, kidney disease, and past allergy. Antipsychotics increase death risk in older adults with dementia-related psychosis. Parkinson-related approval does not remove this warning; discuss the expected benefit and risks.
Medicines & interactions
Heart-rhythm medicines
Some combinations are unsafe because both medicines change the heart's electrical timing. Have your full list checked.
Infection medicines
Certain antibiotics or antifungals may raise drug levels or affect heart rhythm. Check before starting them.
Seizure drugs & herbs
Carbamazepine and St. John's wort can interfere with treatment. Do not start, stop or substitute them without a review.
Parkinson medicines
Adding this drug does not by itself require a carbidopa/levodopa change. Keep those doses as prescribed; discuss all changes with your treating team.
Everyday tips
Keep a short symptom diary and bring your medicine list to every appointment.
Use a daily reminder or agreed care-partner routine so doses are not missed or repeated.
Keep familiar surroundings calm and safe. Ask the care team for a plan for distressing episodes.
Report falls, poor intake, or new illness early. Care partners should ask for support too.
Your questions, answered
Will it make me too sleepy?
That is not the goal, but sleepiness can happen. Avoid driving or risky tasks until you know how you feel; discuss alcohol and sedating medicines.
What if it is not helping?
Tell your prescriber what has and has not changed. Do not increase the dose yourself; the diagnosis, medicines, or treatment plan may need review.
What about pregnancy or nursing?
Tell your prescriber. Human safety information is limited, so treatment and any infant monitoring need an individual plan.
Can I stop when things settle?
Talk with your team first. Symptoms can return; the medicine and its active breakdown product leave the body slowly.
Storage & safety
Keep in its closed container at room temperature, away from heat, moisture, and children; protect capsules from light. For a suspected overdose, call US Poison Control: 1-800-222-1222; call 911 for severe symptoms.
About this information
For general information only; not a substitute for individualized medical advice. This sheet does not cover every risk or interaction. Ask your prescriber or pharmacist before changing how you take this medication.
Sources
Educational inclusion does not mean this medication or its indications are treated at this practice. Review the guide for your exact product with your prescriber or pharmacist.