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Ortoton are used to relax certain muscles in your body and relieve the stiffness, pain, and discomfort caused by strains, sprains, or other injury to your muscles. However, these medicines do not take the place of rest, exercise or physical therapy, or other treatment that your doctor may recommend for your medical problem. Methocarbamol also has been used to relieve some of the muscle problems caused by tetanus.

Ortoton act in the central nervous system (CNS) to produce their muscle relaxant effects. Their actions in the CNS may also produce some of their side effects.

Special precautions

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 the Ortoton, the following should be considered:

Allergies— Tell your doctor if you have ever had any unusual or allergic reaction to any of the Ortoton or to carbromal, mebutamate, meprobamate (e.g., Equanil), or tybamate. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes.

Pregnancy— although Ortoton have not been shown to cause birth defects or other problems, studies on birth defects have not been done in pregnant women. Studies in animals with metaxalone have not shown that it causes birth defects.

Breast-feeding— Carisoprodol passes into the breast milk and may cause drowsiness or stomach upset in nursing babies. It is not known whether chlorphenesin, chlorzoxazone, metaxalone, or methocarbamol passes into the breast milk. However, these medicines have not been reported to cause problems in nursing babies.

Children— Studies with the Ortoton have been done only in adult patients, and there is no specific information comparing use of these medicines in children with use in other age groups. However, carisoprodol and chlorzoxazone have been used in children. They have not been reported to cause different side effects or problems in children than they do in adults.

Older adults— many medicines have not been tested in older people. Therefore, it may not be known whether they work exactly the same way they do in younger adults or if they cause different side effects or problems in older people. There is no specific information about the use of Ortoton in the elderly.

Other medical problems— The presence of other medical problems may affect the use of a skeletal muscle relaxant. Make sure you tell your doctor if you have any other medical problems, especially:

Allergies, history of, or

Blood disease caused by an allergy or reaction to any other medicine, history of, or

Drug abuse or dependence, or history of, or

Kidney disease or

Liver disease or

Porphyria—Depending on which of the Ortoton you take, the chance of side effects may be increased; your doctor can choose a muscle relaxant that is less likely to cause problems

Epilepsy—Convulsions may be more likely to occur if methocarbamol is given by injection

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 as soon as possible if any of the following side effects occur:

Less common

Fainting;  fast heartbeat;  fever;  hive-like swellings (large) on face, eyelids, mouth, lips, and/or tongue;  mental depression;  shortness of breath, troubled breathing, tightness in chest, and/or wheezing;  skin rash, hives, itching, or redness;  slow heartbeat (methocarbamol injection only);  stinging or burning of eyes;  stuffy nose and red or bloodshot eyes 

Rare

Blood in urine;  bloody or black, tarry stools;  convulsions (seizures) (methocarbamol injection only);  cough or hoarseness;  fast or irregular breathing;  lower back or side pain ;  muscle cramps or pain (not present before treatment or more painful than before treatment);  painful or difficult urination;  pain, tenderness, heat, redness, or swelling over a blood vessel (vein) in arm or leg (methocarbamol injection only);  pinpoint red spots on skin;  puffiness or swelling of the eyelids or around the eyes;  sores, ulcers, or white spots on lips or in mouth;  sore throat and fever with or without chills;  swollen and/or painful glands;  unusual bruising or bleeding ;  unusual tiredness or weakness;  vomiting of blood or material that looks like coffee grounds;  yellow eyes or skin 

Other side effects may occur that usually do not need medical attention.

More common

Blurred or double vision or any change in vision;  dizziness or lightheadedness;  drowsiness  

Less common or rare

Abdominal or stomach cramps or pain;  clumsiness or unsteadiness;  confusion;  constipation;  diarrhea;  excitement, nervousness, restlessness, or irritability;  flushing or redness of face;  headache ;  heartburn;  hiccups;  muscle weakness;  nausea or vomiting ;  pain or peeling of skin at place of injection (methocarbamol only);  trembling;  trouble in sleeping;  uncontrolled movements of eyes (methocarbamol injection only) 

In addition to the other side effects listed above, chlorzoxazone may cause your urine to turn orange or reddish purple. Methocarbamol may cause your urine to turn black, brown, or green. This effect is harmless and will go away when you stop taking the medicine. However, if you have any questions about this, check with your doctor.

Keep all appointments with your doctor and the laboratory.

Do not let anyone else take your medicine.