I have neck pain, upper back and lower back discomfort. It is chronic. I’ve tried different products during the years, and nothing has relieved my back discomfort like SierraSil. I tell everybody I know about the wonderful relief I get with SierraSil. If you hydrate (at least 6 glasses of water) and “adhere” to this everyday. You will find remarkable relief from back discomfort. Yeah for SierraSil.