Some people do say that, especially for severe back pain, but it depends on the person as everyone's reaction to cannabis is different. Have you tried products previously that didn't work?
Other people swear by topicals for back pain, especially if the pain is localized to certain spots. Below is an article we wrote about just that, with some really good info.
My husband recently pulled a muscle in his back and he tried the extra-strength salve stick from a company called Cosmic View (I'm not sure where you live, but this company only operates in California). He was very pleased with how it helped ease the pain! https://www.acosmicview.co/product-index/
Let us know if you have any follow-up questions. Hope this helps!