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Robaxin Oral Precautions and Side Effects


IMPORTANT NOTE: The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate or effective for you. Consult your healthcare professional before using this drug.

Table of Contents

Generic Name: METHOCARBAMOL - ORAL
Pronounced: (meth-oh-KAR-ba-mole)

Robaxin Oral Side Effects

Stomach upset, nausea, flushing, constipation, headache, blurred vision, lightheadedness, dizziness or drowsiness may occur during the first few days as your body adjusts to this medication. If these symptoms persist or become severe, notify 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 immediately if any of these unlikely but serious side effects occur:

  • fast/slow heartbeat
  • fainting
  • yellowing eyes or skin
  • persistent nausea/vomiting
  • stomach/abdominal pain
  • mental/mood changes
  • clumsiness
  • trouble urinating
  • signs of infection (e.g., persistent sore throat, fever)


This medication may cause your urine to turn green-black in color. This harmless effect is temporary and will disappear when the medication is stopped.

A serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction include:

  • rash
  • itching/swelling (especially of the face/tongue/throat)
  • severe dizziness
  • trouble breathing


This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Robaxin Oral Precautions

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:

  • kidney disease
  • liver disease
  • severe difficulty urinating (urinary retention)


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

To minimize dizziness and lightheadedness, get up slowly when rising from a seated or lying position.

Caution is advised when using this drug in the elderly because they may be more sensitive to its side effects, especially dizziness and drowsiness.

This medication should be used during pregnancy only when clearly needed. Discuss the risks and benefits with your doctor.

It is not known if this drug passes into breast milk. Consult your doctor before breast-feeding.


CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.
Copyright 2007 First DataBank, Inc.

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