Pimavanserin
Pimavanserin Oral tablet
What is this medicine?
PIMAVANSERIN (Pi ma VAN ser in) is used to treat hallucinations (hearing voices, seeing things that are not there) and delusions (having beliefs that are not true) associated with Parkinson's disease.
This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
What should I tell my health care provider before I take this medicine?
They need to know if you have any of these conditions:
dementia
heart disease
history of irregular heartbeat
kidney disease
liver disease
low levels of magnesium or potassium in the blood
an unusual or allergic reaction to pimavanserin, other medicines, foods, dyes, or preservatives
pregnant or trying to get pregnant
breast-feeding
How should I use this medicine?
Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. You can take it with or without food. If it upsets your stomach, take it with food. Take your medicine at regular intervals. Do not take it more often than directed. Do not stop taking except on your doctor's advice.
Talk to your pediatrician regarding the use of this medicine in children. This medicine is not approved for use in children.
Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.
What if I miss a dose?
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.
What may interact with this medicine?
Do not take this medicine with any of the following medications:
certain medicines for fungal infections like fluconazole, itraconazole, ketoconazole, posaconazole, voriconazole
cisapride
dofetilide
dronedarone
pimozide
ritonavir
thioridazine
ziprasidone
This medicine may also interact with the following medications:
certain antibiotics like clarithromycin, gatifloxacin, moxifloxacin
certain medicines for irregular heart beat like amiodarone, disopyramide, procainamide, propafenone, sotalol, quinidine
certain medicines for seizures like carbamazepine, phenytoin
indinavir
other medicines for psychotic disturbances
other medicines that prolong the QT interval (cause an abnormal heart rhythm)
rifampin
St. John's Wort
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
What should I watch for while using this medicine?
Visit your doctor or health care professional for regular checks on your progress. Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse.
What side effects may I notice from receiving this medicine?
Side effects that you should report to your doctor or health care professional as soon as possible:
allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
breathing problems
confusion
increase in hallucination, loss of contact with reality
loss of balance or coordination
signs and symptoms of a dangerous change in heartbeat or heart rhythm like chest pain; dizziness; fast or irregular heartbeat; palpitations; feeling faint or lightheaded, falls; breathing problems
swelling of the ankles, feet, hands
Side effects that usually do not require medical attention (Report these to your doctor or health care professional if they continue or are bothersome.):
constipation
fatigue
nausea
This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Where should I keep my medicine?
Keep out of the reach of children.
Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medicine after the expiration date.
NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.
Updated:  
March 21, 2017
Sources:  
U.S. FDA-approved Package Insert