Chlorzoxazone - Oral

Chlorzoxazone is used to help relieve painful muscle spasms associated with bone, muscle, and joint conditions.

Take Chlorzoxazone exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by your doctor.

You may take this medicine with or without food. Take it with food if it causes stomach discomfort. Try to take it at the same time each day.

The dose of this medicine will be decided by your doctor. Your doctor will advise you on the treatment timeframe depending on the severity of your condition and your response to the medication.

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and return to your normal dosing schedule.

DO NOT double a dose under any circumstances.

If you often forget to take your medicine, let your doctor and pharmacist know.

Inform your doctor if you have the following conditions:

• history or known allergic reactions to medicines
• liver disease

Let your doctor know if you are pregnant or breastfeeding.

Be sure to check with your doctor or pharmacist before giving Chlorzoxazone to the elderly. Elderly people may be more sensitive to the side effects.

Why is it important to keep my appointments with the doctor?

Keep your appointments with your doctor. Your doctor needs to monitor your condition and check your response to the medication regularly.

• Routine tests (e.g. liver function) may be done while you are being treated with this medicine. Your doctor will advise you about how often you need to have these tests.
• Regular monitoring of signs and symptoms of liver problems and skin reactions may also be needed.

Chlorzoxazone may cause drowsiness or dizziness. If affected, do not drive or take part in any activity in which you need to be alert.

Other side effects include any of the following: headache, nausea, vomiting, stomach discomfort, constipation, diarrhoea, and weakness.

Some side effects may need immediate medical help. Alert your doctor quickly if you experience any of the following:

• yellowing of the skin or eyes, abdominal pain, dark coloured urine, tiredness, swelling in the legs and ankles
• rashes, breathlessness, swelling of the face, eyes or mouth

Inform your doctor if any of these side effects do not go away or are severe, or if you experience other side effects.

Inform your doctor and pharmacist if you are taking any of these medicines:

• other medicines that cause drowsiness or affect your concentration
• isoniazid (medicine to treat TB [lung infection known as tuberculosis])
• disulfiram (medicine to treat alcoholism or alcohol abuse)

This list does not include all medicines that may interact with Chlorzoxazone.

Always notify your doctor and pharmacist if you are taking any other medicines, including herbal tonics such as traditional Chinese medicines, supplements, and medicines that you buy without a prescription.

Avoid alcohol. Alcohol intake may worsen the dizziness and drowsiness caused by Chlorzoxazone.

Store in a cool, dry place away from the reach of children.

Medicines must not be used past the expiry date.