metaxalone (Oral route)Pronunciation
Commonly used brand name(s)
In the U.S.
Available Dosage Forms:
Therapeutic Class: Skeletal Muscle Relaxant, Centrally Acting
Uses For metaxalone
Metaxalone is used to relax certain muscles in your body and relieve the discomfort caused by acute (short-term), painful muscle or bone conditions. However, metaxalone does not take the place of rest, exercise, physical therapy, or other treatments that your doctor may recommend for your medical condition.
Metaxalone is a skeletal muscle relaxant. It acts on the central nervous system (CNS) to relax muscles.
metaxalone is available only with your doctor's prescription.
Before Using metaxalone
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For metaxalone, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to metaxalone or any other medicines. Also tell your health care 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.
Appropriate studies have not been performed on the relationship of age to the effects of metaxalone in children 12 years of age and younger. Safety and efficacy have not been established.
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of metaxalone in the elderly. However, elderly patients are more likely to have age-related kidney or liver problems, which may require caution in patients receiving metaxalone.
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Interactions with Medicines
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking metaxalone, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using metaxalone with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Chloral Hydrate
- Morphine Sulfate Liposome
- Sodium Oxybate
Interactions with Food/Tobacco/Alcohol
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
Other Medical Problems
The presence of other medical problems may affect the use of metaxalone. Make sure you tell your doctor if you have any other medical problems, especially:
- Anemia or
- Kidney disease, severe or
- Liver disease, severe—Should not be used in patients with these conditions.
- Kidney disease or
- Liver disease—Use with caution. The effects may be increased because of slower removal of the medicine from the body.
Proper Use of metaxalone
It is best to take metaxalone tablets on an empty stomach or without food.
The dose of metaxalone will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of metaxalone. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
- For relaxing muscles:
- For oral dosage form (tablets):
- Adults and teenagers older than 12 years of age—800 milligrams (mg) three to four times a day.
- Children 12 years of age and younger—Use and dose must be determined by your doctor.
- For oral dosage form (tablets):
If you miss a dose of metaxalone, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.
Keep out of the reach of children.
Do not keep outdated medicine or medicine no longer needed.
Ask your healthcare professional how you should dispose of any medicine you do not use.
Precautions While Using metaxalone
It is very important that your doctor check your progress at regular visits to make sure metaxalone is working properly and to check for unwanted effects.
metaxalone may cause some people to become dizzy, drowsy, or less alert than they are normally. These effects may be increased if you take metaxalone with food. Make sure you know how you react to metaxalone before you drive, use machines, or do anything else that could be dangerous if you are not alert.
metaxalone will add to the effects of alcohol and other CNS depressants (medicines that make you drowsy or less alert). Some examples of CNS depressants are antihistamines or medicine for hay fever, allergies, or colds; sedatives, tranquilizers, or sleeping medicine; prescription pain medicine or narcotics; barbiturates; medicine for seizures; or anesthetics, including some dental anesthetics. Check with your medical doctor or dentist before taking any of the above while you are taking metaxalone.
metaxalone Side Effects
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.
Check with your doctor immediately if any of the following side effects occur:More common
- Abdominal or stomach pain
- back or leg pains
- black, tarry stools
- bleeding gums
- chest pain
- dark urine
- difficulty in breathing or swallowing
- fast heartbeat
- general body swelling
- loss of appetite
- nausea or vomiting
- painful or difficult urination
- pale skin
- shortness of breath
- skin itching, rash, or redness
- sore throat
- sores, ulcers, or white spots on the lips or in the mouth
- swelling of the face, throat, or tongue
- swollen glands
- unpleasant breath odor
- unusual bleeding or bruising
- unusual tiredness or weakness
- vomiting of blood
- yellowing of the eyes or skin
- puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
- tightness in the chest
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:More common
- stomach cramps
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.
See also: Side effects (in more detail)
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