<unk>  (sold under the brand name Flexeril, among others) is a medication used for muscle spasms from musculoskeletal conditions of sudden onset. It is not useful in cerebral palsy. It is taken by mouth. Use is not recommended for more than a few weeks. Common side effects include headache, feeling tired, dizziness, and dry mouth. Serious side effects may include an irregular heartbeat. There is no evidence of harm in pregnancy, but it has not been well studied in this population. It should not be used with an MAO inhibitor. How it works is unclear.<unk>  was approved for medical use in the United States in 1977. It is available as a generic medication. In 2019, it was the 45th most commonly prescribed medication in the United States, with more than 15million prescriptions. It was not available in the United Kingdom as of 2012.
Cyclobenzaprine
Bethanechol
Dihydroergotamine
Glycopyrronium bromide
Avacopan
Terbutaline
Clofoctol
Pilocarpine