OVERDOSAGE
OVERDOSAGE
Symptoms of overdosage may include drowsiness, disorientation and extrapyramidal reactions. Anticholinergic or antiparkinson drugs or antihistamines with anticholinergic properties may be helpful in controlling the extrapyramidal reactions. Symptoms are self-limiting and usually disappear within 24 hours.
Hemodialysis removes relatively little metoclopramide, probably because of the small amount of the drug in blood relative to tissues. Similarly, continuous ambulatory peritoneal dialysis does not remove significant amounts of drug. It is unlikely that dosage would need to be adjusted to compensate for losses through dialysis. Dialysis is not likely to be an effective method of drug removal in overdose situations.
Unintentional overdose due to misadministration has been reported in infants and children with the use of metoclopramide syrup. While there was no consistent pattern to the reports associated with these overdoses, events included seizures, extrapyramidal reactions and lethargy.
Methemoglobinemia has occurred in premature and full-term neonates who were given overdoses of metoclopramide (1 to 4 mg/kg/day orally, intramuscularly or intravenously for 1 to 3 or more days). Methemoglobinemia can be reversed by the intravenous administration of methylene blue. However, methylene blue may cause hemolytic anemia in patients with G6PD deficiency, which may be fatal (see PRECAUTIONS – Other Special Populations).
MEDICATION GUIDE
MEDICATION GUIDE
Metoclopramide (met” oh kloe’ pra mide) Injection, USP
You or your caregiver should read the Medication Guide before you start receiving metoclopramide injection and before you get another dose of metoclopramide injection. There may be new information. If you take another product that contains metoclopramide (such as metoclopramide tablets, metoclopramide orally disintegrating tablets, or metoclopramide oral solution), you should read the Medication Guide that comes with that product. Some of the information may be different. This Medication Guide does not take the place of talking to your doctor about your medical condition or your treatment.
What is the most important information I should know about metoclopramide?
Metoclopramide can cause serious side effects, including:
Abnormal muscle movements called tardive dyskinesia (TD). These movements happen mostly in the face muscles. You can not control these movements. They may not go away even after stopping metoclopramide. There is no treatment for TD, but symptoms may lessen or go away over time after you stop taking metoclopramide.
Your chances for getting TD go up:
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- the longer you take metoclopramide and the more metoclopramide you take. You should not take metoclopramide for more than 12 weeks.
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- if you are older, especially if you are a woman
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- if you have diabetes
It is not possible for your doctor to know if you will get TD if you take metoclopramide.
Call your doctor right away if you get movements you can not stop or control, such as:
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- lip smacking, chewing, or puckering up your mouth
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- frowning or scowling
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- sticking out your tongue
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- blinking and moving your eyes
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- shaking of your arms and legs
See the section "What are the possible side effects of metoclopramide?" for more information about side effects.
What is metoclopramide?
Metoclopramide is a prescription medicine used to:
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- relieve symptoms of slow stomach emptying in people with diabetes
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- prevent nausea and vomiting that can happen with cancer chemotherapy
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- prevent nausea and vomiting that may happen after surgery, if your doctor decides that you should not be treated with a stomach tube and suction
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- help make it easier to insert a tube into the small intestine in both adults and children, if the tube does not pass into the stomach normally.
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- to help empty stomach contents or to help barium move through your intestine, when you get an X-ray examination of the stomach or small intestine. It is not known if metoclopramide is safe and works in children except when used to help insert a tube into the small intestine.
Who should not receive metoclopramide?
Do not receive metoclopramide if you:
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- have stomach or intestine problems that could get worse with metoclopramide, such as bleeding, blockage or a tear in your stomach or bowel wall
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- have an adrenal gland tumor called pheochromocytoma
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- are allergic to metoclopramide or anything in it. See the end of this Medication Guide for a list of ingredients in metoclopramide.
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- take medicines that can cause uncontrolled movements, such as medicines for mental illness
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- have seizures
What should I tell my doctor before receiving metoclopramide?
Tell your doctor about all of your medical conditions, including if you have:
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- depression
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- Parkinson's disease
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- high blood pressure
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- kidney problems. Your doctor may start with a lower dose.
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- liver problems or heart failure. Metoclopramide may cause your body to hold fluids.
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- diabetes. Your dose of insulin may need to be changed.
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- breast cancer
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- you are pregnant or plan to become pregnant. It is not known if metoclopramide will harm your unborn child.
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- you are breastfeeding. Metoclopramide is passed into human milk and may harm your baby. Talk with your doctor about the best way to feed your baby if you take metoclopramide.
Tell your doctor about all the medicines you take, including prescription and non-prescription medicines, vitamins and herbal supplements. Metoclopramide and some other medicines can affect each other and may not work as well, or cause possible side effects. Do not start any new medicines while receiving metoclopramide until you talk with your doctor.
Especially tell your doctor if you take:
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- another medicine that contains metoclopramide, such as metoclopramide tablets, metoclopramide orally disintegrating tablets, or metoclopramide oral solution
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- a blood pressure medicine
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- a medicine for depression, especially a Monoamine Oxidase Inhibitor (MAOI)
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- insulin
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- a medicine that can make you sleepy, such as anti-anxiety medicine, sleep medicines, and narcotics.
If you are not sure if your medicine is one listed above, ask your doctor or pharmacist. Know the medicines you take. Keep a list of them and show it to your doctor and pharmacist when you get a new medicine.
How will I receive metoclopramide?
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- Metoclopramide will be given to you by intravenous (IV) infusion into your vein or by intramuscular (IM) injection into a large muscle. Where and how you receive your metoclopramide injection (IV or IM) will depend on why you are receiving it.
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- Certain side effects can happen if metoclopramide is given too fast. See the section "What are the possible side effects of metoclopramide?"
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- You should not take or receive metoclopramide for more than 12 weeks.
What should I avoid while receiving metoclopramide?
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- Do not drink alcohol while receiving metoclopramide. Alcohol may make some side effects of metoclopramide worse, such as feeling sleepy.
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- Do not drive, work with machines, or do dangerous tasks until you know how metoclopramide affects you. Metoclopramide may cause sleepiness.
What are the possible side effects of metoclopramide?
Metoclopramide can cause serious side effects, including:
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- Abnormal muscle movements. See the section "What is the most important information I should know about metoclopramide?"
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- Uncontrolled spasms of your face and neck muscles, or muscles of your body, arms, and legs (dystonia). These muscle spasms can cause abnormal movements and body positions. These spasms usually start within the first 2 days of treatment. These spasms happen more often in children and adults under age 30.
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- Depression, thoughts about suicide, and suicide. Some people who take metoclopramide become depressed. You may have thoughts about hurting or killing yourself. Some people who take metoclopramide have ended their own lives (suicide).
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- Neuroleptic Malignant Syndrome (NMS). NMS is a very rare but very serious condition that can happen with metoclopramide. NMS can cause death and must be treated in a hospital. Symptoms of NMS include: high fever, stiff muscles, problems thinking, very fast or uneven heartbeat, and increased sweating.
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- Parkinsonism. Symptoms include slight shaking, body stiffness, trouble moving or keeping your balance. If you already have Parkinson's disease, your symptoms may become worse while you are receiving metoclopramide.
Call your doctor and get medical help right away if you:
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- feel depressed or have thoughts about hurting or killing yourself
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- have high fever, stiff muscles, problems thinking, very fast or uneven heartbeat, and increased sweating
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- have muscle movements you can not stop or control
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- have muscle movements that are new or unusual
Common side effects of metoclopramide include:
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- feeling restless, sleepy, tired, dizzy, or exhausted
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- headache
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- confusion
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- trouble sleeping
Infusion related side effects can happen if metoclopramide is given too fast. You may feel very anxious and restless for a short time, and then become sleepy while you are receiving a dose of metoclopramide. Tell your doctor or nurse right away if this happens.
You may have more side effects the longer you take metoclopramide and the more metoclopramide you take.
Tell your doctor about any side effects that bother you or do not go away. These are not all the possible side effects of metoclopramide.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
General information about metoclopramide
Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide.
This Medication Guide summarizes the most important information about metoclopramide. If you would like more information about metoclopramide, talk with your doctor. You can ask your doctor or pharmacist for information about metoclopramide that is written for healthcare professionals. For more information go to www.hospira.com or call 1-800-615-0187.
What are the ingredients in metoclopramide?
Active ingredient: metoclopramide
Inactive ingredients: sodium chloride, water, hydrochloric acid or sodium hydroxide
This Medication Guide has been approved by the U.S. Food and Drug Administration.
Distributed by Hospira, Inc., Lake Forest, IL 60045 USA
LAB-1291-2.0
Revised: 09/2023
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