Methocarbamol

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Generic Name: Methocarbamol Brand Name(s): Generics only. No brands available.

Uses

What is Methocarbamol used for?

Methocarbamol is used to treat muscle spasms/pain. It is usually used along with rest, physical therapy, and other treatment. It works by helping to relax the muscles.

How should I take Methocarbamol?

Take this medication by mouth with or without food as directed by your doctor, usually 3 to 4 times a day.

The dosage is based on your medical condition and response to treatment. Do not increase your dose or take it more often than prescribed. Your condition will not improve any faster, and your risk of side effects will increase.

Tell your doctor if your condition does not improve or if it worsens.

How do I store Methocarbamol?

Methocarbamol is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store Methocarbamol in the bathroom or the freezer. There may be different brands of Methocarbamol that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

You should not flush Methocarbamol down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.

Precautions & warnings

What should I know before using Methocarbamol?

Before taking methocarbamol, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver disease.

This drug may make you dizzy or drowsy or cause blurred vision. Do not drive, use machinery, or do any activity that requires alertness or clear vision until you are sure you can perform such activities safely. Avoid alcoholic beverages.

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

Older adults may be more sensitive to the side effects of this drug, especially confusion, dizziness, or drowsiness. These side effects can increase the risk of falling.

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

It is unknown if this drug passes into breast milk. Consult your doctor before breast-feeding.

Is it safe during pregnancy or breast-feeding?

There are no adequate studies in women for determining risk when using this Methocarbamol during pregnancy or while breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking Methocarbamol. Methocarbamol is pregnancy risk category C according to the US Food and Drug Administration (FDA).

FDA pregnancy risk category reference below:

  • A=No risk,
  • B=No risk in some studies,
  • C=There may be some risk,
  • D=Positive evidence of risk,
  • X=Contraindicated,
  • N=Unknown

Side effects

What side effects can occur from Methocarbamol?

Drowsiness, dizziness, lightheadedness, stomach upset, nausea/vomiting, or blurred vision may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor right away if you have any serious side effects, including: fainting, slow heartbeat, yellowing eyes/skin, persistent nausea/vomiting, mental/mood changes (such as confusion, forgetfulness).

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.

Interactions

What drugs may interact with Methocarbamol?

Tell your doctor or pharmacist if you are taking other products that cause drowsiness such as opioid pain or cough relievers (such as codeine, hydrocodone), alcohol, marijuana, drugs for sleep or anxiety (such as alprazolam, lorazepam, zolpidem), other muscle relaxants (such as carisoprodol, cyclobenzaprine), or antihistamines (such as cetirizine, diphenhydramine).

Check the labels on all your medicines (such as allergy or cough-and-cold products) because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely.

This medication may interfere with certain laboratory tests (including VMA or 5-HIAA urine screening test), possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.

Methocarbamol may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.

Does food or alcohol interact with Methocarbamol?

Methocarbamol may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.

What health conditions may interact with Methocarbamol?

Methocarbamol may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.

Dosage

The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using this Methocarbamol.

What is the dose of Methocarbamol for an adult?

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.

Renal Dose Adjustments

Use of the injectable form of methocarbamol is not recommended in patients with renal insufficiency due to the high concentration of polyethylene glycol in the solution.

Other Comments

The injectable preparation of methocarbamol is intended for IV or IM use only.

Injectable methocarbamol may be administered undiluted directly into the vein at a maximum rate of 3 mL (300 mg) per minute. It may also be added to an intravenous infusion of Sodium Chloride Injection or 5% Dextrose Injection. One vial given as a single dose should not be diluted to more than 250 mL for IV infusion. Care should be exercised to avoid vascular extravasation of the solution, which may result in thrombophlebitis. Patient should preferably be in a recumbent position during and for at least 10 to 15 minutes following the injection.

When given intramuscularly, not more than 5 mL should be injected into each gluteal region.

What is the dose of Methocarbamol for a child?

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

How is Methocarbamol available?

Methocarbamol is available in the following dosage forms and strengths:

  • Oral tablet,
  • Injectable solution

What should I do in case of an emergency or overdose?

In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.

What should I do if I miss a dose?

If you miss a dose of Methocarbamol, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.

Hello Health Group does not provide medical advice, diagnosis or treatment.

Sources

Review Date: March 23, 2018 | Last Modified: March 23, 2018

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