Flexeril was one popular brand name for the drug cyclobenzaprine. Although the brand Flexeril is no longer available, many doctors still use its name to refer to cyclobenzaprine. Cyclobenzaprine ...

Cyclobenzaprine is a generic drug that’s prescribed for muscle spasms. As with other drugs, cyclobenzaprine can cause side effects, such as drowsiness and anxiety. Cyclobenzaprine oral tablets are not ...