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Medications and Drugs

Brand Names: Parafon Forte DSC

Generic Name: chlorzoxazone (Pronunciation: klor ZOX a zone)

What is chlorzoxazone (Parafon Forte DSC)?

Chlorzoxazone is a muscle relaxant. It works by blocking nerve impulses (or pain sensations) that are sent to your brain.

Chlorzoxazone is used together with rest and physical therapy to treat skeletal muscle conditions such as pain or injury.

Chlorzoxazone may also be used for other purposes not listed in this medication guide.

Chlorzoxazone 500 mg-BAR

round, green, imprinted with barr, 555 585

Chlorzoxazone 500 mg-TEV

oblong, white, imprinted with 93 542

Parafon Forte DSC

oblong, green, imprinted with MCNEIL, PARAFON FORTE DSC

What are the possible side effects of chlorzoxazone (Parafon Forte DSC)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using chlorzoxazone and call your doctor at once if you have any of these serious side effects:

  • nausea, stomach pain, low fever, loss of appetite, itching, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
  • black, bloody, or tarry stools;
  • coughing up blood or vomit that looks like coffee grounds; or
  • feeling like you might pass out.

Less serious side effects may include:

  • drowsiness, dizziness, tired feeling;
  • restlessness;
  • slightly discolored urine; or
  • mild skin rash or bruising.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about chlorzoxazone (Parafon Forte DSC)?

Before taking chlorzoxazone, tell your doctor if you have liver disease. You may need a lower dose or special monitoring during therapy.

Chlorzoxazone can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.

Avoid drinking alcohol. It can increase some of the side effects of chlorzoxazone.



Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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