2 doctors weighed in:

How long doe flexeril (cyclobenzaprine hcl) take to be out of system for urine test?

2 doctors weighed in
Dr. Vahe Yetimyan
General Practice

In brief: 90 hours.

The drug has a half-life of 18 hours, which means it will probably stay active in your body for 90 hours.
Therefore, it will show up on drug tests for 3.75 days after you have taken it, but this time period may vary by individual. If a person has a bad liver or a kidney problem, the drug may stay in their bodies longer.

In brief: 90 hours.

The drug has a half-life of 18 hours, which means it will probably stay active in your body for 90 hours.
Therefore, it will show up on drug tests for 3.75 days after you have taken it, but this time period may vary by individual. If a person has a bad liver or a kidney problem, the drug may stay in their bodies longer.
Dr. Vahe Yetimyan
Dr. Vahe Yetimyan
Thank
Dr. Ronald Krauser
Internal Medicine - Rheumatology

In brief: Not an issue

Urine tests do not test for Flexeril (cyclobenzaprine hcl).

In brief: Not an issue

Urine tests do not test for Flexeril (cyclobenzaprine hcl).
Dr. Ronald Krauser
Dr. Ronald Krauser
Thank
Get help from a real doctor now
Dr. Marsha Davis
Board Certified,
25 years in practice
67M people helped
Continue
111,000 doctors available
Read more answers from doctors