Cyclobenzaprine is a skeletal muscle relaxant and a central nervous system (CNS) depressant. It is marketed as Flexeril (5 and 10 mg tablets). Both the 5 and 10 milligram tablets are available generically.
Mechanism of action
The exact
mechanism of action for cyclobenzaprine is unknown. Current research appears to indicate that cyclobenzaprine acts on the
locus coeruleus where it results in increased norepinephrine release, potentially through the gamma fibers which innervate and inhibit the
alpha motor neurons in the vetral horn of the spinal cord.
* Decreased firing of the alpha motor neuron results in decreased muscular tone.
Indications
Cyclobenzaprine is typically prescribed to relieve pain and muscle spasms. Typically, muscle spasms occur in an injury to stabilize the affected body part and prevent further damage. The spasm of the muscles can actually increase the pain level. It is believed that by decreasing muscular spasm, pain is diminished. A common application would be that of a
whiplash injury in a car accident.
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MedlinePlus: Cyclobenzaprine - Provides information on usage, precautions, side effects and brand names when available. Data provided by various government agencies and health-related organizations.