Chlorzoxazone is used to relax certain muscles in your body and relieve the discomfort caused by acute painful muscle or bone conditions. However, this medicine does not take the place of rest, exercise, physical therapy, or other treatments that your doctor may recommend for your medical condition. Chlorzoxazone is a skeletal muscle relaxant. It acts on the central nervous system (CNS) to relax muscles. This medicine is available only with your doctor's prescription.
Before taking this medicine
You should not use Lorzone if you are allergic to it.
To make sure Lorzone is safe for you, tell your doctor if you have:
- liver disease.
- It is not known whether this medicine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.
- It is not known whether chlorzoxazone passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a baby.
- Lorzone is not approved for use by anyone younger than 18 years old.
Chlorzoxazone is used to treat muscle spasms/pain. It is usually used along with rest, physical therapy, and other treatment. It works by helping to relax the muscles.
How to use Lorzone
Take this medication by mouth with or without food as directed by your doctor, usually 3 or 4 times a day.
The dosage is based on your medical condition and response to treatment. Do not increase your dose or take it more often than prescribed. Your condition will not improve any faster, and your risk of side effects will increase.
The dose of this medicine will be different for different patients. Make sure to follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. 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 oral dosage form (tablets):
For relaxing muscles:
- Adults—500 milligrams (mg) three or four times a day. Your doctor may adjust your dose if needed.
- Children—Use and dose must be determined the your doctor.
Drowsiness, dizziness, lightheadedness, tiredness, upset stomach, or headache may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
This medication may rarely cause your urine to turn orange or reddish-purple. This effect is harmless and will disappear when the medication is stopped.
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.
This medicine 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 before taking any of these medicines while you are taking chlorzoxazone.