You should not use cyclobenzaprine if you are allergic to it, or if you have:

      • a thyroid disorder;
      • heart block, heart rhythm disorder, congestive heart failure; or
      • if you have recently had a heart attack.

Cyclobenzaprine is not approved for use by anyone younger than 15 years old.

Do not use cyclobenzaprine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine.

Some medicines can interact with cyclobenzaprine and cause a serious condition called serotonin syndrome. Be sure your doctor knows if you also take stimulant medicine, opioid medicine, herbal products, or medicine for depression, mental illness, Parkinson’s disease, migraine headaches, serious infections, or prevention of nausea and vomiting. Ask your doctor before making any changes in how or when you take your medications.

Tell your doctor if you have ever had:

      • liver disease;
      • glaucoma;
      • enlarged prostate; or
      • problems with urination.

It is not known whether this medicine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.

It may not be safe to breast-feed while using this medicine. Ask your doctor about any risk.

Older adults may be more sensitive to the effects of this medicine.

HOW SHOULD I TAKE CYCLOBENZAPRINE?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose. Use the medicine exactly as directed.

Cyclobenzaprine is usually taken once daily for only 2 or 3 weeks. Follow your doctor’s dosing instructions very carefully.

Swallow the capsule whole and do not crush, chew, break, or open it.

Take the medicine at the same time each day.

Call your doctor if your symptoms do not improve after 3 weeks, or if they get worse. Store at room temperature away from moisture, heat, and light.

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