Amrix Warnings and Precautions
To help ensure the safety of Amrix, warnings and precautions for the medication should be reviewed with your healthcare provider before you begin treatment. You should let your healthcare provider know if you have glaucoma, liver disease, or difficulty passing urine before taking Amrix. The drug is not suitable for everyone; you should not take Amrix if you have an arrhythmia, congestive heart failure, or an overactive thyroid.
You should talk with your healthcare provider prior to taking Amrix® (cyclobenzaprine ER) if you have:
- Difficulty passing urine
- Liver disease, such as liver failure, cirrhosis, or hepatitis
- An overactive thyroid (hyperthyroidism)
- Congestive heart failure (CHF)
- An irregular heart rhythm (arrhythmia)
- Had a heart attack recently
- Any allergies, including allergies to food, dyes, or preservatives.
Also, let your healthcare provider know if you are:
- Pregnant or thinking of becoming pregnant
Make sure to tell your healthcare provider about all other medicines you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.
Some warnings and precautions to be aware of prior to taking Amrix include the following:
- If you have liver disease, your body may not handle Amrix as well as usual. Amrix is not recommended for people with any degree of liver impairment.
- People over age 65 should not take Amrix, as studies have shown that elderly individuals cannot clear the drug from the body as well as younger individuals.
- Amrix commonly causes drowsiness and dizziness, which may interfere with your ability to drive, operate heavy machinery, or focus mentally. Even if you take Amrix just at bedtime, you may experience a hangover-like effect in the morning.
- Check with your healthcare provider before taking Amrix if you have glaucoma (an eye condition) or difficulty passing urine, as Amrix may make these conditions worse.
- Amrix may increase the risk of a potentially dangerous group of symptoms known as serotonin syndrome, especially when used in combination with certain other medications. These symptoms include:
- Fast heartbeat
- Feeling faint
- Muscle spasm
- Difficulty walking
Call your healthcare provider right away if you have any of these symptoms, as serotonin syndrome can be very dangerous.
- Amrix can potentially interact with a many other medications (see Amrix Interactions).
- Amrix is considered a pregnancy Category B medication. This means that it is probably safe for use during pregnancy, although the full risks are not currently known (see Amrix and Pregnancy).
- It is not known if Amrix passes through breast milk in humans. Therefore, if you are breastfeeding or plan to start breastfeeding, discuss this with your healthcare provider prior to taking the drug (see Amrix and Breastfeeding).