General Practice 2022

Cyclobenzaprine hydrochloride: what is it for (and how to take it)

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Cyclobenzaprine hydrochloride: what is it for (and how to take it)
Cyclobenzaprine hydrochloride: what is it for (and how to take it)

Cyclobenzaprine hydrochloride is a muscle relaxant indicated for the treatment of muscle pain caused by fibromyalgia, torticollis or periarthritis, for example, as it acts by blocking nerve impulses or pain sensations that are sent to the brain that cause contractions, spasms or muscle pain.

Cyclobenzaprine can be found in the form of 5 or 10 mg tablets, under the trade name Miosan, in the generic form as “cyclobenzaprine hydrochloride” or with similar names Mitrul, Mirtax or Musculare, for example. In addition, there is another formulation that combines cyclobenzaprine hydrochloride with caffeine, which potentiates the relaxing effect of cyclobenzaprine and can be found under the trade name of Miosan Caf.

Cyclobenzaprine hydrochloride should be used with medical indication, by adults only, for a maximum period of 2 to 3 weeks of treatment. Find out about other muscle relaxants that your doctor may prescribe.

What is cyclobenzaprine used for

Cyclobenzaprine is indicated for the treatment of muscle pain related to some musculoskeletal diseases such as:

  • Torticollis;
  • Fibromyalgia;
  • Periarthritis in the shoulder;
  • Lumbar spine pain;
  • Pain that starts in the neck and radiates to the arm.

This remedy should always be indicated by the doctor, evaluating the he alth conditions individually.

How to use

The way to use cyclobenzaprine hydrochloride is 1 tablet of 5 or 10 mg, orally, 2 to 4 times a day, as directed by the doctor. The maximum dose of cyclobenzaprine is 60 mg per day and treatment should not exceed a maximum period of 3 weeks.

The tablets should be taken without breaking, without chewing, with a glass of water, before or after food, and usually have an onset of action about 1 hour after administration.

If you forget to take a dose at the right time, take it as soon as you remember, but if it is close to the time for your next dose, skip the missed dose and wait for the next time to take it. Do not double the dose to make up for the missed dose.

Possible side effects

The most common side effects that may occur during treatment with cyclobenzaprine are drowsiness, excessive tiredness, dizziness, dry mouth, headache, stomach pain, nausea or constipation.

Does cyclobenzaprine hydrochloride make you sleepy?

One of the most frequent side effects that this medication can cause is drowsiness, so it is likely that some people who take the treatment will feel sleepy.

Therefore, you should be careful or avoid activities such as driving, using heavy machines, performing dangerous activities and avoiding the consumption of alcoholic beverages, as the use of alcohol can increase the effects of drowsiness and dizziness.

Who should not use cyclobenzaprine

Cyclobenzaprine hydrochloride should not be used by children under 15 years of age, pregnant or breastfeeding women, by people with glaucoma, urinary retention, hyperthyroidism, heart problems such as heart attack, congestive heart failure, arrhythmias or heart block.

In addition, cyclobenzaprine hydrochloride should not be used by people using antidepressant medications, anxiety medications, or monoamine oxidase inhibitors such as isocarboxazid, linezolid, phenelzine or selegiline, for example.

It is important to inform the doctor and pharmacist of all medications that are used, including supplements or medicinal plants, to avoid increasing the effect of cyclobenzaprine.

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