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).
Cyclobenzaprine is the generic form of Flexeril, a prescription muscle relaxer that relieves pain and discomfort caused by strains, sprains, and other muscle injuries.It is also available under the brand names Amrix, Fexmid, and FusePaq Tabradol.yclobenzaprine is also prescribed off-label to treat fibromyalgia. Cyclobenzaprine works on the central nervous system, blocking nerve impulses (or pain sensations) that are sent from sore muscles to your brain. Cyclobenzaprine is chemically related to a class of antidepressants called tricyclics.