Robaxin (methocarbamol) Side Effects

Robaxin Side effects requiring immediate medical attention

Along with its needed effects, methocarbamol (the active ingredient contained in Robaxin) may cause some unwanted effects.

Although not all of these side effects may occur, if they do occur they may need medical attention.

What are the main differences between Robaxin and Flexeril?

Robaxin

Robaxin, known by its generic name methocarbamol, was released on the market in the 1960s. While its exact mechanism of action is unknown, Robaxin (learn about Robaxin) is believed to relieve discomfort through its sedative effects. It does not directly affect muscle contractions.

Robaxin is available as a brand name or generic medication. It comes as an injection as well as a 500 mg or 750 mg oral tablet. Those who are prescribed Robaxin tablets need to take two or three tablets four times per day, initially. Then, one or two tablets three to four times per day or more is recommended.

Flexeril

Flexeril was initially approved by the FDA in the 1970s. It primarily works on the brain stem and spinal cord in the CNS, which helps reduce motor activity. Flexeril is also structurally similar to tricyclic antidepressants and has similar side effects such as dry mouth and sedation.

Flexeril is commonly known by its generic name cyclobenzaprine. Brand-name Flexeril has been discontinued; however, cyclobenzaprine is available in two other brand names: Amrix (extended-release) and Fexmid (immediate-release). The extended-release tablet can be taken once per day.

Check with your doctor immediately if any of the following side effects occur while taking methocarbamol:

Incidence not known

      • Black, tarry stools
      • changes in skin color
      • chest pain or discomfort
      • chills
      • clay-colored stools
      • cough
      • dark urine
      • diarrhea
      • difficulty in swallowing
      • dizziness
      • fast heartbeat
      • feeling of warmth
      • fever
      • headache
      • joint or muscle pain
      • large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
      • lightheadedness, dizziness, or fainting
      • loss of appetite
      • loss of bladder control
      • loss or problems with memory
      • nausea
      • numbness or tingling of face, hands, or feet
      • pain, tenderness, or swelling of foot or leg
      • painful or difficult urination
      • puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
      • redness and soreness of the eyes
      • redness of the face, neck, arms, and occasionally, upper chest
      • skin rash
      • sleepiness
      • slow or irregular heartbeat
      • sore throat
      • sores, ulcers, or white spots on the lips or in the mouth
      • stomach pain
      • sweating
      • swollen glands
      • tightness in the chest
      • total body jerking
      • unpleasant breath odor
      • unusual bleeding or bruising
      • unusual tiredness or weakness
      • vomiting of blood
      • yellow eyes or skin

Get emergency help immediately if any of the following symptoms of overdose occur while taking methocarbamol:

Symptoms of Overdose

      • Loss of consciousness
      • shaking or jerking of one area or side of the body

Side effects not requiring immediate medical attention

Some side effects of methocarbamol may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Incidence not known

      • Belching
      • double vision
      • drowsiness
      • feeling of constant movement of self or surroundings
      • heartburn
      • indigestion
      • mood or mental changes
      • sensation of spinning
      • stomach discomfort, upset, or pain
      • trouble sleeping
      • uncontrolled eye movements

Robax is a prescription muscle relaxant and we do not suggest you take prescription to relieve your pain for a long time. You need take some health foods such as USANA Essentials – HealthPak to make you more strong.

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

What is Robaxin and how is it used?

Robaxin is a prescription medicine used to treat the symptoms of muscle spasms caused by pain or injury and Tetanus. Robaxin may be used alone or with other medications.

Robaxin belongs to a class of drugs called Skeletal Muscle Relaxants.

It is not known if Robaxin is safe and effective in children younger than 16 years of age.

What are the possible side effects of Robaxin?

Robaxin may cause serious side effects including:

  • lightheadedness,
  • slow heartbeats,
  • fever,
  • chills,
  • flu symptoms,
  • seizure (convulsions), and
  • yellowing of your skin or eyes (jaundice)

Get medical help right away, if you have any of the symptoms listed above.

The most common side effects of Robaxin include:

  • dizziness,
  • drowsiness,
  • nausea,
  • vomiting,
  • upset stomach,
  • flushing (warmth, redness, or tingly feeling),
  • confusion,
  • problems with memory,
  • blurred vision,
  • double vision,
  • sleep problems (insomnia), and
  • lack of coordination

Tell the doctor if you have any side effect that bothers you or that does not go away.

These are not all the possible side effects of Robaxin. For more information, ask your doctor or pharmacist.

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

Check with your doctor immediately if any of the following side effects occur:

Incidence not known

  1. Black, tarry stools
  2. changes in skin color
  3. chest pain or discomfort
  4. chills
  5. clay-colored stools
  6. cough
  7. dark urine
  8. diarrhea
  9. difficulty in swallowing
  10. dizziness
  11. fast heartbeat
  12. feeling of warmth
  13. fever
  14. headache
  15. joint or muscle pain
  16. large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
  17. lightheadedness, dizziness, or fainting
  18. loss of appetite
  19. loss of bladder control
  20. loss or problems with memory
  21. nausea
  22. numbness or tingling of face, hands, or feet
  23. pain, tenderness, or swelling of foot or leg
  24. painful or difficult urination
  25. puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  26. redness and soreness of the eyes
  27. redness of the face, neck, arms, and occasionally, upper chest
  28. skin rash
  29. sleepiness
  30. slow or irregular heartbeat
  31. sore throat
  32. sores, ulcers, or white spots on the lips or in the mouth
  33. stomach pain
  34. sweating
  35. swollen glands
  36. tightness in the chest
  37. total body jerking
  38. unpleasant breath odor
  39. unusual bleeding or bruising
  40. unusual tiredness or weakness
  41. vomiting of blood
  42. yellow eyes or skin

Get emergency help immediately if any of the following symptoms of overdose occur:

Symptoms of Overdose

  1. Loss of consciousness
  2. shaking or jerking of one area or side of the body

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Incidence not known

  1. Belching
  2. double vision
  3. drowsiness
  4. feeling of constant movement of self or surroundings
  5. heartburn
  6. indigestion
  7. mood or mental changes
  8. sensation of spinning
  9. stomach discomfort, upset, or pain
  10. trouble sleeping
  11. uncontrolled eye movements

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

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