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methocarbamol

Pronunciation

Generic Name: methocarbamol (meth oh KAR ba mal)
Brand Name: Robaxin, Robaxin-750, Carbacot, Skelex

What is methocarbamol?

Methocarbamol is a muscle relaxer.

Methocarbamol is used together with rest and physical therapy to treat skeletal muscle conditions such as pain or injury.

Methocarbamol may also be used for purposes not listed in this medication guide.

What is the most important information I should know about methocarbamol?

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

What should I discuss with my health care provider before taking methocarbamol?

You should not use methocarbamol if you are allergic to it.

To make sure methocarbamol is safe for you, tell your doctor if you have:

  • myasthenia gravis; or

  • if you also use a narcotic (opioid) medication.

Using methocarbamol during early pregnancy may cause birth defects. Tell your doctor if you are pregnant or if you become pregnant while using this medicine.

It is not known whether methocarbamol passes into breast milk or if it could affect the nursing baby. Tell your doctor if you are breast-feeding.

Methocarbamol is not approved for use by anyone younger than 16 years old.

How should I take methocarbamol?

Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.

You may need to reduce your dose after the first 2 or 3 days of treatment. Carefully follow your doctor's dosing instructions.

Methocarbamol is only part of a complete treatment program that may also include rest, physical therapy, or other pain relief measures. Follow your doctor's instructions very closely.

This medicine can cause unusual results with certain medical tests. Tell any doctor who treats you that you are using methocarbamol.

Store at room temperature away from moisture and heat.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include extreme drowsiness, fainting, or seizure (convulsions).

What should I avoid while taking methocarbamol?

This medication may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.

Drinking alcohol with this medicine can cause side effects.

Methocarbamol side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using methocarbamol and call your doctor at once if you have:

  • a light-headed feeling, like you might pass out;

  • slow heartbeats;

  • fever, chills, flu symptoms;

  • a seizure (convulsions); or

  • jaundice (yellowing of your skin or eyes).

Common side effects may include:

  • dizziness, drowsiness;

  • nausea, vomiting, upset stomach;

  • flushing (warmth, redness, or tingly feeling);

  • confusion, problems with memory;

  • blurred vision, double vision;

  • sleep problems (insomnia); or

  • lack of coordination.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

See also: Side effects (in more detail)

Methocarbamol dosing information

Usual Adult Dose for Muscle Spasm:

Oral:
Initial dose: 1500 mg four times a day for the first 48 to 72 hours, up to a maximum dosage of 8 g/day for severe symptoms.
Maintenance dose: 4000 to 4500 mg/day in divided doses.

IV or IM:
1000 mg up to every 8 hours if necessary, not to exceed 3 g/day for more than 3 consecutive days except in the treatment of tetanus. A like course may be repeated after a lapse of 48 hours if the condition persists. Oral therapy should be instituted as soon as possible. For symptoms of moderate severity, oral doses may be adequate after one injection if patient can tolerate oral medications.

Usual Adult Dose for Tetanus:

1 to 2 g directly into IV tubing, followed by an additional 1 to 2 g by IV infusion for a total dose of up to 3 g initially. This procedure may be repeated every 6 hours until nasogastric tube can be inserted. Then, crushed tablets suspended in water or saline solution can be given through the nasogastric tube. Total daily oral doses up to 24 g may be required.

Usual Pediatric Dose for Tetanus:

Initial dose: 15 mg/kg/dose IV or 500 mg/m2/dose IV, may repeat every 6 hours if needed.

Maximum dose: 1.8 g/m2/day IV for 3 days only

What other drugs will affect methocarbamol?

Taking methocarbamol with other drugs that make you sleepy or slow your breathing can cause dangerous side effects or death. Ask your doctor before taking a sleeping pill, narcotic pain medicine, prescription cough medicine, a muscle relaxer, or medicine for anxiety, depression, or seizures.

Other drugs may interact with methocarbamol, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell each of your health care providers about all medicines you use now and any medicine you start or stop using.

Where can I get more information?

  • Your pharmacist can provide more information about methocarbamol.
  • 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.
  • Disclaimer: Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

Copyright 1996-2012 Cerner Multum, Inc. Version: 6.01.

Last reviewed: March 10, 2017
Date modified: April 03, 2017

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