I think it's not, at least that what I read online! I stopped using it just in case.
When I get really bad back pain I schedule a mssage and I feel lot better!
I took icy hot and my doctor said it was ok since its a topical cream and it's not digested. But you should ask your ob. Not everyone can use the same thing
My doc said to use it to help woth my bacm, but I prefer my heating pad