frameshift mutation / frame-shift mutation; frameshift. A frameshift mutation is a genetic mutation caused by a deletion or insertion in a DNA sequence that shifts the way the sequence is read. A DNA sequence is a chain of many smaller molecules called nucleotides.
As for Flexeril (cyclobenzaprine) is is not a controlled substance under US, Canadian, or international law. Some drugs used as muscle relaxants ARE controlled substances like Valium and many US states and countries have listed Soma (carisoprodol) as a controlled substance (or prohibited it).
When you stop taking Flexeril, you may experience certain unpleasant symptoms called âa discontinuation or withdrawal syndrome.â Flexeril is only supposed to be used for two weeks, but when people use it for years or abuse it in large amounts, they are more likely to develop the syndrome.yclobenzaprine, sold under the brand name Flexeril, is a muscle relaxant commonly prescribed for injuries and sprains. In 2012, doctors wrote over 26 million prescriptions for it, making it widely available.