@beejenigma Cyclobenzaprine has not lost it's effectiveness for me. I only take one 5mg tablet before bed.

I don't mean to argue, but they are the same drug. The difference is in the delivery -- Tonmya is taken subliminally (under the tongue) taken instead of in pill form. I found this explanation on line: "Cyclobenzaprine is a muscle relaxant used to treat muscle spasms, while norcyclobenzaprine is its active metabolite that can also affect serotonin receptors and may contribute to side effects. Both compounds have similar pharmacological effects, but norcyclobenzaprine has a longer half-life and can build up in the body, potentially leading to increased side effects."