Chlorzoxazone Oral tablet

What is this medicine?

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

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

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

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.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.

NOTE: This medicine is only for you. Do not share this medicine with others.

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.

What may interact with this medicine?

• alcohol or medicines that contain alcohol

• antihistamines

• barbiturates like phenobarbital

• benzodiazepines

• medicines for pain

• muscle relaxants

• phenothiazines like chlorpromazine, mesoridazine, prochlorperazine, thioridazine

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

What should I watch for while using this medicine?

Check with your doctor or health care professional if your condition does not improve.

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.

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

• darkened brown urine

• difficulty breathing

• fever

• nausea or vomiting

• severe stomach pain

• unusually weak or tired

• yellowing of the skin or the whites of the eyes

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

• dizziness

• drowsiness

• headache

• loss of appetite

• orange or purple-red color of the urine

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

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.