Chlorzoxazone

Generic name: Chlorzoxazone
Dosage form: oral tablet (250 mg; 375 mg; 500 mg; 750 mg)
Drug class: Skeletal muscle relaxants

Usage of Chlorzoxazone

Chlorzoxazone is a muscle relaxer that is used together with rest and physical therapy to treat skeletal muscle conditions such as pain or injury.

Chlorzoxazone may also be used for purposes not listed in this medication guide.

Chlorzoxazone side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

chlorzoxazone may cause serious side effects. Stop using chlorzoxazone and call your doctor at once if you have:

a light-headed feeling, like you might pass out;

skin rash, itching, or redness;

liver problems--stomach pain (upper right side), loss of appetite, vomiting, fever, unusual tiredness, dark urine, or jaundice (yellowing of the skin or eyes); or

signs of stomach bleeding--bloody or tarry stools, coughing up blood or vomit that looks like coffee grounds.

Common side effects of chlorzoxazone may include:

drowsiness;

dizziness; or

general ill feeling.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Before taking Chlorzoxazone

You should not use chlorzoxazone if you are allergic to it.

Tell your doctor if you have ever had:

liver disease.

Tell your doctor if you are pregnant or breast-feeding.

Chlorzoxazone is not approved for use by anyone younger than 18 years old.

Relate drugs

How to use Chlorzoxazone

Usual Adult Dose for Muscle Spasm:

Initial dose: 250 to 500 mg orally 3 to 4 times a day -If inadequate response, may increase to 750 mg orally 3 or 4 times a dayComments: -The dose should be reduced as improvement occurs. Use: As an adjunct to rest, physical therapy, and other measures for the relief of discomfort associated with acute, painful musculoskeletal conditions.

Warnings

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

What other drugs will affect Chlorzoxazone

Using chlorzoxazone with other drugs that make you drowsy can worsen this effect. Ask your doctor before using opioid medication, a sleeping pill, a muscle relaxer, or medicine for anxiety or seizures.

Other drugs may affect chlorzoxazone, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all your current medicines and any medicine you start or stop using.

Disclaimer

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