The time it takes for cyclobenzaprine to work can vary from person to person.
However once you start taking the cyclobenzaprine you should start noticing results from the cyclobenzaprine and the cyclobenzaprine should begin to work within a few days.
But it can take a few weeks for the full effects to be seen from taking the cyclobenzaprine.
After a few weeks to a month of taking cyclobenzaprine the cyclobenzaprine should begin to work fully and you should notice the full results and full effects of the cyclobenzaprine.