Medications


Chlorzoxazone tablets

What is this medicine?

CHLORZOXAZONE (klor ZOX a zone) helps to relieve pain and stiffness in muscles and can treat muscle spasms.

How should I use this medicine?

Take this medicine by mouth with a full glass of water. Follow the directions on the prescription label. If this medicine upsets your stomach, take it with food or milk. Take your medicine at regular intervals. Do not take your medicine more often than directed.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:

  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue

  • breathing problems

  • signs and symptoms of liver injury like dark yellow or brown urine; general ill feeling or flu-like symptoms; light-colored stools; loss of appetite; nausea; right upper belly pain; unusually weak or tired; yellowing of the eyes or skin

  • unusually weak or tired

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • dizziness

  • headache

  • loss of appetite

  • orange or purple-red color of the urine

  • tiredness

What may interact with this medicine?

Do not take this medication with any of the following medicines:

  • narcotic medicines for cough

This medicine may also interact with the following medications:

  • alcohol

  • antihistamines for allergy, cough and cold

  • certain medicines for anxiety or sleep

  • certain medicines for depression like amitriptyline, fluoxetine, sertraline

  • certain medicines for seizures like phenobarbital, primidone

  • general anesthetics like halothane, isoflurane, methoxyflurane, propofol

  • local anesthetics like lidocaine, pramoxine, tetracaine

  • medicines that relax muscles for surgery

  • narcotic medicines for pain

  • phenothiazines like chlorpromazine, mesoridazine, prochlorperazine, thioridazine

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only the next dose. Do not take double or extra doses.

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Keep container tightly closed. Throw away any unused medicine after the expiration date.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

  • drink more than 3 alcohol containing drinks per day

  • liver disease

  • an unusual or allergic reaction to chlorzoxazone, other medicines, lactose, foods, dyes, or preservatives

  • pregnant or trying to get pregnant

  • breast-feeding

What should I watch for while using this medicine?

Tell your doctor or health care professional if your symptoms do not start to get better or if they get worse.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.

If you are taking another medicine that also causes drowsiness, you may have more side effects. Give your health care provider a list of all medicines you use. Your doctor will tell you how much medicine to take. Do not take more medicine than directed. Call emergency for help if you have problems breathing or unusual sleepiness.


NOTE:This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider. Copyright© 2017 Elsevier
Powered by Krames Patient Education - A Product of StayWell