In this session, we will be discussing the consumer medication information for cyclobenzaprine, trade name FlexerilTM.

What it’s for & How to take

Cyclobenzaprine relaxes your muscles. This medication works by slowing down the messages between your brain and your muscles.

Cyclobenzaprine is used with rest and physical therapy to relax your muscles and relieve the pain caused by muscle injuries and muscle spasms.

Cyclobenzaprine is usually taken not more than 3 times daily, or as directed by your doctor. Your dose is based specifically on your condition and response to treatment. Do not take this medication more often than prescribed because the side effects can be dangerous.

If you forget to take a dose, take it as soon as you remember. If it is near the time of your next dose, skip it and continue with your normal dose time. Do not take a double dose to make up the missed dose.

Cyclobenzaprine is usually used for not more than 3 weeks. If your condition is not improving within 3 weeks, contact your doctor to talk about it. There are some conditions where your doctor will have you take this medication on a regular basis.

Warnings & Cautions

  • Do not take cyclobenzaprine if you have an abnormal heartbeat, heart failure, a recent heart attack or a thyroid disorder. Your condition may worsen if taken with this medication.
  • The elderly may be more sensitive to the side effects of this medication, especially the drowsiness and dizziness. The chances of loss of balance and falling are increased.
  • This medication may make you dizzy, drowsy, or blur your vision. Do not drive or do any activity that requires focus and attention until you are sure you can do them safely. Avoid alcoholic beverages while taking cyclobenzaprine.
  • Let your pharmacist or doctor know if you are pregnant or breastfeeding before taking this medication.

Interactions & Side Effects

  • Tell your pharmacist or doctor all your medication allergies so they may determine if cyclobenzaprine is safe for you to take.
  • Avoid dangerous drug interactions. Tell your pharmacist or doctor all the other medication you are taking, including over the counter supplements, even if you don’t take them very often.
  • Ask your doctor if this medication is safe to take with your current health conditions. Tell your doctor if you have any heart disease, an abnormal heartbeat, thyroid disorder, difficulty urinating, liver or kidney disease, and any other medical condition you may have.
  • While taking cyclobenzaprine, you may feel tired, dizzy, have a headache, uncoordinated, blurred vision and constipated. If these or any other unwanted side effects persist, contact your doctor or pharmacist to talk about it with them.
  • Call your doctor right away if you have any significant mood changes, difficulty urinating, abnormal heartbeat, yellowing of eyes or skin, persistent vomit, or significant loss of coordination.
  • Call emergency 911 if you have a seizure or any symptoms of an allergic reaction such as difficulty breathing or swelling of your face, lips tongue or throat.

If you have any questions about what you have heard, contact your pharmacist or doctor. This session does not include all the potential interactions or side effects that this medication may cause. Ask your pharmacist how your medication should be stored and how you should dispose of it when you are done taking it. Do not share your medication with anyone, ever. Remember, this is not meant to replace your counseling session with your pharmacist. In case of overdose, call your local poison control center at 1-800-222-1222.

Updated 7/20