Back Pain Home > Flexeril

Flexeril is a prescription drug that is used to treat muscle spasms that are due to injuries or other muscle problems. This muscle relaxant comes in the form of a tablet that is typically taken three times a day and should only be used for two or three weeks at a time. Although most people tolerate the drug well, side effects of Flexeril can include a dry mouth, dizziness, and fatigue.

What Is Flexeril?

Flexeril® (cyclobenzaprine hydrochloride) is a prescription muscle relaxant. It is meant to be used temporarily to treat muscle spasms due to injury or other muscle problems.
(Click Flexeril Uses for more information on what the drug is used for, including possible off-label uses.)

Who Makes Flexeril?

Brand-name Flexeril is made by McNeil Consumer & Specialty Pharmaceuticals. Generic Flexeril is made by several different manufacturers.

How Does It Work?

It is not clear as to how exactly Flexeril works to relieve muscle spasms. However, it is known that it mostly works in the brain stem, not in the spinal cord and not directly on the muscles. The medication only works to relieve muscle spasms caused by problems in the muscles; it does not help with muscle spasms caused by problems in the brain or spinal cord.

When and How to Take Flexeril

Some general considerations for when and how to take this drug include the following:
  • The medication comes in the form of a tablet. It is usually taken three times daily (although a less frequent dose may be recommended for elderly people or for people who have liver problems).
  • In general, it should only be used for two or three weeks at a time.
  • You can take it with or without food. If the medicine bothers your stomach, try taking it with food.
  • Flexeril can cause significant drowsiness. Your healthcare provider may recommend that you take it only at night, especially if you need to be alert during the day.
  • For the medication to work properly, it must be taken as prescribed. It will not work if you stop taking it.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
List of references (click here):
Other Articles in This eMedTV Presentation




Related Channels

eMedTV Links
Copyright © 2006-2020 Clinaero, Inc.

eMedTV serves only as an informational resource. This site does not dispense medical advice or advice of any kind. Site users seeking medical advice about their specific situation should consult with their own physician. Click Terms of Use for more information.

This site complies with the HONcode standard for trustworthy health information:
verify here.