Confidence votes 81. It cost about $500-$800 worth a year's supply of diapers for the first year.The next years may or may not cost more, the same, or less.
Cyclobenzaprine, sold under the brand name Flexeril among others, is a muscle relaxer medication used to relieve skeletal muscle spasms and associated pain in acute musculoskeletal conditions. It is the best-studied drug for this application. It has also been used off-label for fibromyalgia treatment.
However, it is difficult to tell if insomnia is due to Flexeril or other, unrelated factors. Insomnia is a possible (although rare) side effect of Flexeril Â® (cyclobenzaprine hydrochloride). In fact, for the majority of people, Flexeril is much more likely to cause drowsiness.