This medication is a muscle relaxant, prescribed for muscle spasm and the resulting pain or discomfort. It is used in combination with physical therapy, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) (such as aspirin or acetaminophen), and rest.
Chlorzoxazone works in the brain to ease pain.
Oral: The recommended initial dose is 500 mg 3-4 timesday. May reduce to 250 mg 3-4 timesday subsequently. Max: 750 mg 3-4 timesday. It comes as a tablet to take by mouth. It usually is taken three or four times a day with food.
Feeling lightheaded, sleepy, having blurred eyesight, or a change in thinking clearly. Avoid driving and doing other tasks or actions that call for you to be alert or have clear eyesight until you see how this drug affects you. Feeling dizzy. Rise slowly over a few minutes when sitting or lying down. Be careful climbing. Upset stomach or throwing up. Many small meals, good mouth care, sucking hard, sugar-free candy, or chewing sugar-free gum may help.
Take a missed dose as soon as you think about it. - If it is close to the time for your next dose, skip the missed dose and go back to your normal time. Do not take 2 doses at the same time or extra doses. - Many times this drug is taken on an as needed basis.
If you have an allergy to chlorzoxazone or any other part of this drug. Tell your doctor if you are allergic to any drugs. Make sure to tell about the allergy and what signs you had. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs. If you have liver disease. If you are breast-feeding.
If you think there was an overdose, call your local poison control center or ER right away. Signs of a very bad reaction to the drug. These include wheezing; chest tightness; fever; itching; bad cough; blue or gray skin color; seizures; or swelling of face, lips, tongue, or throat. Signs of low potassium. Very bad dizziness or passing out. Very upset stomach or throwing up. Not able to pass urine. Any rash. Side effect or health problem is not better or you are feeling worse.
Sometimes drugs are not safe when you take them with certain other drugs and food. - Taking them together can cause bad side effects. - Be sure to talk to your doctor about all the drugs you take.
Oral: Store at 15-30°C. Store it in air tight container and keep away from children.
Category C : Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.
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