Methocarbamol (Injection)

Methocarbamol helps relieve pain from short-term muscle or bone conditions. However, it does not replace rest, exercise, physical therapy, or other treatments your doctor may suggest for your condition.

Methocarbamol (Injection) is also used to treat tetanus, which is when muscles contract for a long time. However, it does not replace other treatments for tetanus. If you are taking any medicine for your tetanus, continue using it as directed by your doctor.

This medicine is available only with a prescription from your doctor.

It is very important that your doctor checks your progress closely while you are receiving this medicine. This will help your doctor see if the medicine is working properly and to check for unwanted effects.

Your doctor will only give you a few doses of this medicine until your condition improves, and then you will be switched to an oral medicine that works the same way. If you have any concerns about this, talk to your doctor.

Check with your doctor before using this medicine with alcohol or other medicines that affect the central nervous system (CNS). Using alcohol or other CNS-affecting medicines with risperidone may worsen the side effects of this medicine, such as dizziness, poor concentration, drowsiness, unusual dreams, and trouble sleeping. Some examples of medicines that affect the CNS are antihistamines or medicines for allergies or colds, sedatives, tranquilizers, or sleeping medicines, medicines for depression, medicines for anxiety, prescription pain medicines or narcotics, medicines for attention deficit and hyperactivity disorder, medicines for seizures or barbiturates, muscle relaxants, or anesthetics, including some dental anesthetics.

This medicine may cause some people to become dizzy or drowsy. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are not alert.

Make sure any doctor or dentist who treats you knows that you are using this medicine. This medicine may affect the results of certain medical tests.

The vial stopper of Methocarbamol (Injection) contains dry natural rubber (a derivative of latex), which may cause allergic reactions in people who are sensitive to latex. Tell your doctor if you have a latex allergy before you start using this medicine.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.

In deciding to use a medicine, you need to think about the risks of taking it compared to the benefits it may provide. This is a decision you will make with your doctor. For this medicine, consider the following:

Allergies

Tell your doctor if you have ever had any unusual or allergic reactions to this medicine or any other medicines. Also inform your healthcare professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Studies have not been done to determine how age affects the use of methocarbamol in children. Safety and effectiveness have only been established in children with tetanus.

Geriatric

Studies so far have not found any specific problems in elderly patients that would limit the usefulness of methocarbamol. However, older adults may be more sensitive to the effects of this medicine than younger adults.

Breast Feeding

Research suggests that using this medication while breastfeeding poses minimal risk to the infant.

Interactions with Medicines

Some medicines should not be used together, while others can be used together even if there might be an interaction. In these cases, your doctor may adjust the dose or take other precautions. It is especially important for your healthcare professional to know if you are taking any of the medicines listed below when receiving this medicine. The following interactions are notable but may not be all-inclusive.

Using this medicine with any of the following medicines is usually not recommended, but may be necessary in some cases. If both are prescribed together, your doctor may change the dose or frequency of one or both medicines.

• Alfentanil
• Alprazolam
• Amobarbital
• Aprobarbital
• Benzhydrocodone
• Bromazepam
• Buprenorphine
• Butabarbital
• Butalbital
• Butorphanol
• Calcium Oxybate
• Cannabidiol
• Cannabis
• Carisoprodol
• Cetirizine
• Chloral Hydrate
• Chlordiazepoxide
• Chlorzoxazone
• Clobazam
• Clonazepam
• Clorazepate
• Codeine
• Dantrolene
• Daridorexant
• Dexmedetomidine
• Diazepam
• Dihydrocodeine
• Doxylamine
• Esketamine
• Estazolam
• Ethchlorvynol
• Fentanyl
• Flibanserin
• Flunitrazepam
• Flurazepam
• Gabapentin
• Gabapentin Enacarbil
• Halazepam
• Hydrocodone
• Hydromorphone
• Ketamine
• Ketazolam
• Lacosamide
• Lemborexant
• Levocetirizine
• Levorphanol
• Lofexidine
• Lorazepam
• Lormetazepam
• Loxapine
• Magnesium Oxybate
• Medazepam
• Meperidine
• Mephenesin
• Mephobarbital
• Meprobamate
• Metaxalone
• Methadone
• Methohexital
• Metoclopramide
• Midazolam
• Morphine
• Morphine Sulfate Liposome
• Nalbuphine
• Nitrazepam
• Olanzapine
• Oxazepam
• Oxycodone
• Oxymorphone
• Pentazocine
• Pentobarbital
• Periciazine
• Phenobarbital
• Potassium Oxybate
• Prazepam
• Pregabalin
• Primidone
• Quazepam
• Remifentanil
• Remimazolam
• Ropeginterferon Alfa-2b-njft
• Scopolamine
• Secobarbital
• Sodium Oxybate
• Sufentanil
• Tapentadol
• Temazepam
• Thiopental
• Topiramate
• Tramadol
• Trazodone
• Triazolam
• Zolpidem
• Zuranolone

Interactions with Food/Tobacco/Alcohol

Some medicines should not be taken around mealtime or with certain foods due to potential interactions. Using alcohol or tobacco with certain medicines may also cause interactions. Discuss the use of your medicine with food, alcohol, or tobacco with your healthcare professional.

Other Medical Problems

Having other medical problems may affect how this medicine works. Be sure to tell your doctor if you have any other medical issues, especially:

• Kidney disease—Should not be used in patients with this condition.

• Liver disease—Use with caution. The effects of this medicine may be stronger because it is removed from the body more slowly.

• Myasthenia gravis or
• Seizures—Use with caution. This medicine may worsen these conditions.

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

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

Incidence not known

• Black, tarry stools
• blurred vision
• changes in skin color
• chest pain or discomfort
• chills
• clay-colored stools
• confusion
• convulsions
• cough
• dark urine
• difficulty swallowing
• dizziness, faintness, or lightheadedness when suddenly getting up from a lying or sitting position
• drowsiness
• fast heartbeat
• fever
• headache
• 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
• muscle spasm or jerking of all extremities
• nausea
• pain, tenderness, or swelling of the foot or leg
• painful or difficult urination
• puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
• rash, hives, itching, red skin
• slow or irregular heartbeat
• sore throat
• sores, ulcers, or white spots on the lips or in the mouth
• stomach pain
• sudden loss of consciousness
• sweating
• swollen glands
• tightness in the chest
• 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:

Symptoms of overdose

• Loss of consciousness
• 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

• Belching
• bleeding, blistering, burning, coldness, discoloration of skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site
• burning, dry, or itching eyes
• discharge, excessive tearing
• double vision
• feeling of constant movement of self or surroundings
• feeling of warmth
• heartburn
• indigestion
• metallic taste
• redness of the face, neck, arms, and occasionally, upper chest
• redness, pain, or swelling of the eye, eyelid, or inner lining of the eyelid
• sensation of spinning
• stuffy nose
• trouble sleeping
• uncontrolled eye movements
• vomiting

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.

In the U.S.

• Robaxin

Available Dosage Forms:

• Solution

Therapeutic Class: Skeletal Muscle Relaxant, Centrally Acting

A nurse or other trained health professional will give you this medicine. This medicine is given as a shot into a muscle or into a vein.

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