So I just got prescribed Tizanidine for my pain in my legs. Anyone have any experience?

I'm a former addict and take Suboxone. My doctor at my Sub clinic treats my pain by prescribing Horizant (Gabapentin ER), Celecoxcib (Celebrex), and now Zanaflex (Tizanidine). She also allows the Suboxone (Buprenorphine) to treat the pain alongside treating the addiction. I'm also prescribed Vitamin D3 by my primary care doctor to treat the pain as well. My pain is a come and go daily pain in my lower legs that feels like my legs are growing out of my body.

What is Tizanidine like? Does it help at all? What's been your experience with it?