Prochlorperazine Injection

What is this medication?

PROCHLORPERAZINE (proe klor PER a zeen) treats nausea and vomiting. It works by blocking substances in your body that may cause nausea and vomiting. It may also be used to treat schizophrenia. It works by balancing the levels of dopamine in your brain, a substance that helps regulate mood, behaviors, and thoughts.

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

COMMON BRAND NAME(S): Compazine, Compazine Solution

What should I tell my care team before I take this medication?

They need to know if you have any of these conditions:

• Blockage in your bowel
• Brain tumor
• Dementia
• Diabetes
• Difficulty swallowing
• Frequently drink alcohol
• Glaucoma
• Have trouble controlling your muscles
• Head injury
• Heart disease
• History of irregular heartbeat
• Liver disease
• Low blood counts, such as low white cell, platelet, or red cell counts
• Low blood pressure
• Lung or breathing disease, such as asthma
• Parkinson disease
• Prostate disease
• Seizures
• Trouble passing urine
• An unusual or allergic reaction to prochlorperazine, other medications, foods, dyes, or preservatives
• Pregnant or trying to get pregnant
• Breast-feeding

How should I use this medication?

This medication is for injection into a muscle or into a vein. It is given in a hospital or clinic setting.

Talk to your care team about the use of this medication in children. While this medication may be prescribed for children as young as 2 years of age for selected conditions, precautions do apply.

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?

This does not apply.

What may interact with this medication?

Do not take this medication with any of the following:

• Cisapride
• Dofetilide
• Dronedarone
• Metoclopramide
• Pimozide
• Saquinavir
• Thioridazine

This medication may also interact with the following:

• Alcohol
• Antihistamines for allergy, cough, and cold
• Atropine
• Certain medications for anxiety or sleep
• Certain medications for bladder problems, such as oxybutynin, tolterodine
• Certain medications for depression, such as amitriptyline, fluoxetine, sertraline
• Certain medications for stomach problems, such as dicyclomine, hyoscyamine
• Certain medications for travel sickness, such as scopolamine
• Epinephrine
• General anesthetics, such as halothane, isoflurane, methoxyflurane, propofol
• Ipratropium
• Levodopa or other medications for Parkinson disease
• Lithium
• Medications for blood pressure
• Medications for seizures, such as phenobarbital, primidone, phenytoin
• Medications that relax muscles for surgery
• Opioid medications for pain
• Propranolol
• Warfarin

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 medication?

Your condition will be monitored carefully while you are receiving this medication.

This medication may affect your coordination, reaction time, or judgment. Do not drive or operate machinery until you know how this medication affects you. Sit up or stand slowly to reduce the risk of dizzy or fainting spells. Drinking alcohol with this medication can increase the risk of these side effects.

This medication can cause problems with controlling your body temperature. It can lower the response of your body to cold temperatures. If possible, stay indoors during cold weather. If you must go outdoors, wear warm clothes. It can also lower the response of your body to heat. Do not overheat. Do not over-exercise. Stay out of the sun when possible. If you must be in the sun, wear cool clothing. Drink plenty of water. If you have trouble controlling your body temperature, call your care team right away.

This medication may increase blood sugar. The risk may be higher in patients who already have diabetes. Ask your care team what you can do to lower your risk of diabetes while taking this medication.

This medication can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.

Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your care team if the problem does not go away or is severe.

What side effects may I notice from receiving this medication?

Side effects that you should report to your care team as soon as possible:

• Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
• High fever, stiff muscles, increased sweating, fast or irregular heartbeat, and confusion, which may be signs of neuroleptic malignant syndrome
• High prolactin level—unexpected breast tissue growth, discharge from the nipple, change in sex drive or performance, irregular menstrual cycle
• Infection—fever, chills, cough, or sore throat
• Low blood pressure—dizziness, feeling faint or lightheaded, blurry vision
• Uncontrolled and repetitive body movements, muscle stiffness or spasms, tremors or shaking, loss of balance or coordination, restlessness, shuffling walk, which may be signs of extrapyramidal symptoms (EPS)

Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome):

• Constipation
• Dizziness
• Drowsiness
• Dry mouth
• Pain, redness, or irritation at injection site

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 medication?

This medication is given in a hospital or clinic. It will not be stored at home.

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.