Metoclopramide - oral/ IV / IM (Reglan®)

Author: OncoLink Team
Last Reviewed: April 10, 2026

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Pronounce: met-oh-KLOE-pra-mide

Classification: Antiemetic; Dopamine Antagonist; Serotonin 5-HT4 Receptor Agonist; Prokinetic

About Metoclopramide - oral/ IV / IM (Reglan®)

Dopamine and serotonin are chemicals in the body that can cause nausea and vomiting by stimulating the chemoreceptor trigger zone in the brain. This medication works by blocking dopamine and serotonin from stimulating this chemoreceptor trigger zone, which helps prevent and treat nausea and vomiting. This medication can also be used to treat gastroesophageal reflux (GERD) and diabetic gastroparesis by helping the gastrointestinal (GI) tract’s motility and by making gastric emptying faster.

How to Take This Medication

The oral form of metoclopramide may be taken as a scheduled or as-needed medication. If you are taking a scheduled dose, it should be taken 30 minutes before a meal and again at bedtime. The intravenous form of metoclopramide may be given before a chemotherapy regimen or as needed as an IV push (depending on the dose) or as a short infusion. This medication can also be given as an intramuscular (IM, into a muscle) injection if your provider feels this is necessary.

This medication can be affected by certain foods and medications, so they should be avoided. These include: acetaminophen, anti-Parkinson agents including apomorphine, bromocriptine, levodopa, pramipexole, and ropinirole, antipsychotics/mood medications including aripiprazole, haloperidol, quetiapine and risperidone, anxiolytics, atovaquone, cabergoline, bupropion, cyclosporine, fluoxetine, hypnotics, monoamine oxidase inhibitors including linezolid and rasagiline, promethazine, rivastigmine, paroxetine, quinidine, opiates, and sedatives, among others. Be sure to tell your healthcare provider about all medications and supplements you take.

This medication can make you dizzy or sleepy. You should not drink alcohol while taking this medication. You should not drive a car or operate heavy machinery until you know how this medication affects you.

Storage and Handling

For oral (by mouth) administration, store this medication in the original container. Tablets should be stored at room temperature. Keep this medication out of reach of children and pets.

Where do I get this medication?

This medication in the oral form is available through retail/mail order pharmacy. Your oncology team will work with your prescription drug plan to identify an in-network retail/mail order pharmacy for medication distribution. You can work with your provider’s office if this medication needs prior authorization. The intravenous or intramuscular form would be provided to you in a healthcare setting as ordered by your medical team.

Insurance Information

This medication may be covered by your prescription plan. If you qualify, you may be able to get financial help through patient assistance programs (PAP). Co-pay cards may also be available to lower your out-of-pocket cost if you have commercial (not Medicare/Medicaid/Tricare) insurance. Your pharmacist, social worker, or navigator can help find resources for financial support.

Possible Side Effects

This medication is given to manage and/or prevent the side effects of your cancer treatment. If you are having side effects from this medication you should talk to your team about if this medication is necessary to your treatment or if there are other options to help manage the side effect this medication is treating. These are some of the most common side effects:

Fatigue & Drowsiness

This medication, depending on your dose and how often you use it, may make you feel sleepy and tired. Please do not drive or operate heavy machinery until you know how this medication affects your ability to do these activities. Additionally, fatigue is very common during cancer treatment and is an overwhelming feeling of exhaustion that is not usually relieved by rest. While on cancer treatment, and for a period after, you may need to adjust your schedule to manage fatigue. Plan times to rest during the day and conserve energy for more important activities. Exercise can help combat fatigue; a simple daily walk with a friend can help. Talk to your oncology care team for helpful tips on dealing with this side effect.

Restlessness

This medication can make you feel restless or unable to relax. Tell your provider if this is affecting your daily life.

Tardive Dyskinesia

Tardive Dyskinesia (TD) can cause your muscles to move without your control. TD often affects the face muscles, including grimacing, smacking of your lips, and sticking out your tongue. Call your provider right away if you have any new, uncontrolled movements.

Reproductive Concerns

You should consult with your provider before becoming pregnant or fathering a child while on this medication. You should consult with your healthcare team before breastfeeding while receiving this medication because fetal risk cannot be ruled out in these situations. Risk versus benefits should be weighed and discussed with your healthcare team.

Important but Less Common Side Effects

Changes in Muscle Control and Movement

This medication can affect how your muscles work. You may have effects that look like Parkinson's disease (called parkinsonism). This can cause muscle shaking, body stiffness, and trouble moving and keeping your balance. This medication can also cause akathisia. Akathisia is when you are unable to sit still and feel the need to move your hands, feet, or body. If you or a caretaker notices any changes in muscle movement, call your provider right away. 

Neuroleptic Malignant Syndrome

This medication affects dopamine receptors in your brain. Neuroleptic malignant syndrome is a rare but serious side effect that can be caused when this medication blocks the effects of dopamine in your body. This syndrome can cause:

  • Muscle tightness (rigid muscles).
  • A change in mental status, such as confusion, agitation, or slowed responses. 
  • High fever.
  • High blood pressure, sweating, or irregular heart rate.

Tell your provider right away if you have any of these symptoms. Tell your provider about all medication and supplements you take, especially antipsychotics (also called neuroleptic medications). 

Mood Changes

This medication can cause changes to your mood. If you or a caretaker notice that you are not thinking, feeling, or acting the way you normally do, call your provider right away. Some people may have thoughts of hurting themselves or others while on this medication. If you have these thoughts, call 911 right away.