A member asked:

How long does flexrile stay in your system. the muscle relaxant?

A doctor has provided 1 answer

Ranges 8-37 hours: Flexeril (cyclobenzaprine hcl) (cyclobenzaprine) is extensively metabolized in liver to inactive form and excreted in urine. Some amount also excreted unchanged through bile in feces the mean half life is about 18 hours.

Answered 3/30/2015

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