Parafon Forte (Chlorzoxazone) Drug Overview of Side Effects and Precautions for Patients and Caregivers at RxList

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May 27, 2012

Parafon Forte

Types of Pain Medications »

For what conditions are pain medications used?

Virtually any disease as well as most injuries and surgical procedures involve some degree of pain. It's not surprising, then, that pain medications, also known as analgesics, are among the most commonly used drugs in the U.S. Pain can range from minor, acute complaints, such as a muscle sprain, to chronic, severe pain, such as that sometimes experienced by cancer patients. Some drugs used for other conditions also are effective at relieving certain types of pain. These drugs include certain drugs used for depression, epilepsy, and anxiety.

What are the differences among the types of pain medications?

Pain medications can be broadly classified into two categories: prescription and nonprescription. In the latter category are several mild anti-inflammatory drugs (ibuprofen, naproxen), as well as acetaminophen. These are mainly meant for use with short-term, acute pain -- menstrual cramps,...

Read the Types of Pain Medications article »

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SIDE EFFECTS: Drowsiness, dizziness, tiredness, upset stomach, or headache may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

This medication may temporarily cause your urine to turn orange or reddish-purple. This effect is harmless and will go away when the medication is stopped.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these rare but very serious side effects occur: black/bloody stools, vomit that looks like coffee grounds, easy bruising/bleeding, signs of infection (e.g., fever, chills, persistent sore throat).

This medication may rarely cause very serious (possibly fatal) liver disease. Stop taking this medication and seek immediate medical attention if any of these side effects occur: loss of appetite, persistent/severe tiredness, persistent nausea/vomiting, stomach/abdominal pain, yellowing eyes/skin, dark urine.

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

PRECAUTIONS: Before taking chlorzoxazone, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: liver disease.

This drug may make you dizzy or drowsy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

It is not known whether this drug passes into breast milk. Consult your doctor before breast-feeding.