cyclobenzaprine

• Risk factors: Taking other medications that can affect the serotonin levels in your brain

Serotonin syndrome is a rare, but potentially life-threatening condition where there's too much serotonin in the brain. Serotonin is one of the chemicals in your brain responsible for your mood. There have been reports of serotonin syndrome in people taking cyclobenzaprine with other medications that can raise serotonin levels, like certain antidepressants, migraine medications, and pain medications. Tell your pharmacist about all medications and over-the-counter products you take before starting cyclobenzaprine so they can check for any interactions. Symptoms of too much serotonin include a fast heart rate, sweating, muscle stiffness or spasms, fever, and confusion. Tell your healthcare provider or seek medical help right away if you have any of these symptoms.

• Risk factors: Drinking alcohol | Taking other medications that cause drowsiness | Over 65 years old

Taking cyclobenzaprine can make you feel sleepy and affect your concentration and focus. This is more likely to happen if you're over 65 years old or take other medications that cause drowsiness. Don't drink alcohol while taking this medication since it can make these side effects worse. Avoid activities that require you to be alert, like driving or operating machinery, until you know how cyclobenzaprine affects you.

• Risk factors: History of glaucoma or high eye pressure | History of trouble urinating | Taking other anticholinergic medications

Because of how cyclobenzaprine works in the body, it can cause certain bodily fluids, such as tears and saliva, to dry up. For most people, this just causes mild side effects. But for people with glaucoma, high eye pressure, or conditions that make it difficult to urinate, cyclobenzaprine can worsen your symptoms. If you take other medications that cause dry mouth or dry eyes (e.g., anticholinergics), you're more likely to experience these side effects. Make sure your provider knows all of your medical conditions and all the medications you take before you start cyclobenzaprine. Let your provider know if these side effects become bothersome.

• Risk factors: History of liver problems

People who have liver problems should be careful using cyclobenzaprine, and those with severe liver problems aren't recommended to use this medication. Cyclobenzaprine is processed in the body by the liver. If your liver isn't working properly, the medication can stay in your body longer, build up, and raise your risk of side effects like drowsiness and dizziness. Tell your provider if you have a history of liver problems before starting cyclobenzaprine so they can make sure the medication is safe for you.