Norcyclobenzaprine (nCBP) is the primary active metabolite of the muscle relaxant drug cyclobenzaprine (Flexeril), formed when the body processes cyclobenzaprine.
Traditional Cyclobenzaprine (Oral): Swallowed, goes to the stomach, then the liver, where a large portion is converted to norcyclobenzaprine, leading to accumulation and drowsiness.
Tonmya (Sublingual): Dissolves under the tongue, goes directly into the bloodstream, bypassing the liver, and results in less of the metabolite that causes daytime sedation.

I was just diagnosed with Fibromyalgia(age 69) 3 months ago. A lot of bloodwork, CT scans, MRIs etc. And have seen many Drs in 2025.
The pain is excruciating.
I take Vicodin 10mg Q8, Flexeril 5 mg Q8. Aspirin 325 mg Q8 or PRN. The Flexeril doesn’t make me tired and it works in concert with the Vicodin to give me some relief.
Sleep? Ha. Glad gummies help. Sigh.
And because the pain is so bad my BP is dangerously high(which is being treated also).

I have excellent Drs. because I was in healthcare for 35 years and know the good ones. Lol.
All of this sucks. Pain and brain fog.