What is Lorzone: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Lorzone overview

BRAND NAMES:

  • Lorzone, Parafon Forte DSC

Generic Names:

  • Chlorzoxazone

Uses:

  • Treats pain and stiffness caused by muscle spasm. This medicine is a muscle relaxer.

Therapeutic Classes:

  • Skeletal Muscle Relaxant, Centrally Acting

Forms:

  • Tablet

How it’s taken:

  • By mouth

What is Lorzone used for?

What form(s) does Lorzone come in

  • Tablet

What are common Lorzone doses?

  • Tablet 375MG

  • Tablet 750MG

Common Lorzone prescriptions

  • Lorzone
    750mg tablet

How to take Lorzone

  • You may swallow the tablets whole, or you may crush the tablets and mix them with a small amount of food or liquid.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • You may swallow the tablets whole, or you may crush the tablets and mix them with a small amount of food or liquid.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

What to do if you miss a dose of Lorzone

Lorzone contraindications

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to chlorzoxazone.

Lorzone warnings

  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, or glaucoma.

  • This medicine can cause drowsiness, dizziness, or blurred vision. Be careful when you drive a car or use machines.

  • This medicine can cause your urine to turn orange or red. This is normal.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Lorzone interactions

  • Tell your doctor if you use anything else that makes you sleepy. Some examples are allergy medicine, narcotic pain medicine, and alcohol.

  • This medicine can cause drowsiness, dizziness, or blurred vision. Be careful when you drive a car or use machines.

  • This medicine can cause your urine to turn orange or red. This is normal.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Lorzone side effects

Serious Side Effects

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Drowsiness, dizziness, clumsiness

  • Dark urine or pale stools, loss of appetite, nausea, vomiting, stomach pain, yellow eyes or skin

  • Muscle weakness or slurred speech

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