Generic Name: prochlorperazine (rectal) (pro klor PER a zeen)
Brand Name: Compro
What is rectal prochlorperazine?
Prochlorperazine is in a group of drugs called phenothiazines (FEEN-oh-THYE-a-zeens). It works by changing the actions of chemicals in your brain.
Prochlorperazine is used to treat psychotic disorders such as schizophrenia. It is also used to treat anxiety, and to control severe nausea and vomiting.
Prochlorperazine may also be used for other purposes not listed in this medication guide.
What is the most important information I should know about rectal prochlorperazine?
Stop using this medication and call your doctor at once if you have twitching or uncontrollable movements of your eyes, lips, tongue, face, arms, or legs. These could be early signs of dangerous side effects.
Do not use prochlorperazine if you have brain damage, bone marrow depression, or are using large amounts of alcohol or medicines that make you sleepy. Do not use if you are allergic to prochlorperazine or other phenothiazines.
Before using prochlorperazine, tell your doctor about all your medical conditions, and all other medications you use.
What should I discuss with my healthcare provider before using rectal prochlorperazine?
Prochlorperazine is not for use in psychotic conditions related to dementia. Prochlorperazine may cause heart failure, sudden death, or pneumonia in older adults with dementia-related conditions.
Do not use prochlorperazine if you have brain damage, bone marrow depression, or are also using large amounts of alcohol or medicines that make you sleepy. Do not use if you are allergic to prochlorperazine or other phenothiazines such as chlorpromazine (Thorazine), promethazine (Adgan, Pentazine, Phenergan), and others.
If you have certain conditions, you may need a dose adjustment or special tests to safely use this medication. Before you use prochlorperazine, tell your doctor if you have:
heart disease or high blood pressure;
liver or kidney disease;
severe asthma, emphysema, or other breathing problem;
a history of seizures;
adrenal gland tumor (pheochromocytoma);
an enlarged prostate or urination problems;
a bone marrow disease;
an infectious disease such as chickenpox, measles, stomach flu, or an infection of the central nervous system;
past or present breast cancer; or
low levels of calcium in your blood (hypocalcemia).
Tell your doctor if you will be exposed to extreme heat or to insecticide poisons while you are using prochlorperazine.
It is not known whether prochlorperazine will harm an unborn baby. Prochlorperazine may cause side effects in a newborn if the mother uses the medication during pregnancy. Before using this medication, tell your doctor if you are pregnant.
Prochlorperazine can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.
Older adults may be more likely to have side effects from this medication.
Talk with your doctor before giving this medication to a child who has been ill with a fever or flu symptoms. Prochlorperazine is not for use in children younger than 2 years old or weighing less than 20 pounds.
How should I use rectal prochlorperazine?
Use this medication exactly as prescribed by your doctor. Do not use it in larger amounts or for longer than recommended. Follow the directions on your prescription label. Do not take rectal prochlorperazine by mouth.
Remove the outer wrapper from the suppository before inserting it. Avoid handling the suppository too long or it will melt in your hands. You may wet the suppository with a small amount of water to make it easier to insert. Gently insert the suppository into the rectum, pointed tip first. The suppository will begin to melt once inserted.
If you need to have an x-ray or CT scan of your spinal column using a dye that is injected into a vein, you may need to temporarily stop using prochlorperazine. Be sure the doctor knows ahead of time that you are using this medication.
Do not stop using prochlorperazine suddenly after long-term use, or you could have unpleasant withdrawal symptoms. Talk to your doctor about how to avoid withdrawal symptoms.
Store prochlorperazine at room temperature away from moisture and heat.
What happens if I miss a dose?
Use the missed dose as soon as you remember. If it is almost time for your next dose, wait until then to use the medicine and skip the missed dose. Do not use extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention if you think you have used too much of this medicine. Overdose can cause dry mouth, constipation, bloating or stomach cramps, extreme drowsiness or feeling restless and agitated, changes in heart rate, fever, and fainting.
What should I avoid while using rectal prochlorperazine?
Prochlorperazine can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert. Avoid getting up too fast from a sitting or lying position, or you may feel dizzy.
Avoid drinking alcohol. It can increase some of the side effects of prochlorperazine.
Avoid exposure to sunlight or tanning beds. Prochlorperazine can make your skin more sensitive to sunlight. Wear sunscreen (SPF 15 or higher) and protective clothing when you are outdoors.
Rectal prochlorperazine side effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using prochlorperazine and call your doctor at once if you have a serious side effect such as:
twitching or uncontrollable movements of your eyes, lips, tongue, face, arms, or legs;
tremor (uncontrolled shaking), drooling, trouble swallowing, problems with balance or walking;
high fever, stiff muscles, confusion, sweating, fast or uneven heartbeats, rapid breathing;
fainting, seizure (black-out or convulsions);
decreased night vision, tunnel vision, watery eyes, increased sensitivity to light;
nausea and stomach pain, skin rash, and jaundice (yellowing of the skin or eyes);
pale skin, easy bruising or bleeding, fever, sore throat, flu symptoms;
urinating less than usual or not at all;
joint pain or swelling with fever, swollen glands, muscle aches, chest pain, vomiting, unusual thoughts or behavior, and patchy skin color; or
slow heart rate, weak pulse, fainting, slow breathing (breathing may stop).
Less serious side effects may include:
dizziness, drowsiness, anxiety, headache;
sleep problems (insomnia), strange dreams;
blurred vision, dry mouth, stuffy nose;
breast swelling or discharge, a missed menstrual period;
weight gain, swelling in your hands or feet;
impotence, trouble having an orgasm; or
mild itching or skin rash.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
See also: prochlorperazine side effects (in more detail)
Prochlorperazine Dosing Information
Usual Adult Dose for Nausea/Vomiting:
Severe nausea and vomiting:
Tablet: 5 to 10 mg 3 to 4 times a day.
Capsule: 15 mg on arising or 10 mg capsule every 12 hours. Daily oral doses above 40 mg should be used only in resistant cases.
Rectal: 25 mg twice a day.
IM: 5 to 10 mg. If necessary, repeat every 3 to 4 hours. Total IM dosage should not exceed 40 mg/day.
IV: 2 1/2 to 10 mg by slow IV injection or infusion at a rate not to exceed 5 mg/min.
A single dose of the drug should not exceed 10 mg. Total IV dosage should not exceed 40 mg/day.
Adult surgery (for severe nausea and vomiting):
IM: 5 to 10 mg injection 1 to 2 hours before induction of anesthesia (repeat once in 30 minutes, if necessary), or to control acute symptoms during and after surgery (repeat once if necessary).
IV: 5 to 10 mg as a slow IV injection or infusion 15 to 30 minutes before induction of anesthesia, or to control acute symptoms during or after surgery. Repeat once if necessary. A single dose of the drug should not exceed 10 mg. The rate of administration should not exceed 5 mg/minute.
Usual Adult Dose for Anxiety:
Tablet: 5 mg 3 to 4 times a day.
Capsule: 15 mg on arising or 10 mg every 12 hours.
Do not administer in doses of more than 20 mg/day or for longer than 12 weeks.
Usual Adult Dose for Psychosis:
Mild psychotic disorders:
5 to 10 mg orally 3 to 4 times a day.
Moderate to severe psychotic disorders:
Oral: 10 mg orally 3 to 4 times a day. Increase dosage every 2 to 3 days until symptoms are controlled or side effects become bothersome. Some patients respond satisfactorily on 50 to 75 mg/day. In more severe disturbances, optimum dosage is usually 100 to 150 mg/day.
IM: For immediate control of severely disturbed adults, inject an initial dose of 10 to 20 mg deeply into the upper outer quadrant of the buttock. Many patients respond shortly after the first injection. If necessary, repeat the initial dose every 2 to 4 hours (or, in resistant cases, every hour) to gain control of the patient. More than 3 to 4 doses are seldom necessary. After control is achieved, switch patient to an oral form of the drug at the same dosage level or higher. If, in rare cases, parenteral therapy is needed for a prolonged period, give 10 to 20 mg every 4 to 6 hours.
What other drugs will affect rectal prochlorperazine?
Cold or allergy medicine, sedatives, narcotic pain medicine, sleeping pills, muscle relaxers, and medicine for seizures, depression or anxiety can interact with prochlorperazine and cause medical problems or increase side effects. Tell your doctor if you regularly use any of these medicines, or any other anti-psychotic medications.
Also tell your doctor if you are taking any of the following medicines:
atropine (Atreza, Sal-Tropine);
lithium (Eskalith, Lithobid);
a diuretic (water pill);
birth control pills or hormone replacement estrogens;
blood pressure medication;
a blood thinner such as warfarin (Coumadin);
certain asthma medications or bronchodilators;
drugs to treat a prostate disorder;
insulin or diabetes medications you take by mouth;
medication for nausea, vomiting, or motion sickness;
medications to treat or prevent malaria;
medicines used to prevent organ transplant rejection;
numbing medicine such as lidocaine or Novocain, medications used for general anesthesia;
a stimulant or ADHD medication;
ulcer or irritable bowel medications; or
medicines to treat Parkinson's disease, restless leg syndrome, or pituitary gland tumor (prolactinoma).
This list is not complete and there are many other medicines that can interact with prochlorperazine. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor. Keep a list with you of all the medicines you use and show this list to any doctor or other healthcare provider who treats you.
More prochlorperazine resources
Where can I get more information?
- Your pharmacist can provide more information about rectal prochlorperazine.
- Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
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Copyright 1996-2012 Cerner Multum, Inc. Version: 2.03. Revision Date: 2010-12-15, 5:01:39 PM.