Honestly, could you point out where I assumed that? I don’t think I expressed that assumption. I certainly don’t hold it. If you’re concerned about your own B1

Honestly, could you point out where I assumed that? I don’t think I expressed that assumption. I certainly don’t hold it. If you’re concerned about your own B12 levels, oral supplements are cheap and quite bioavailable. I do injections every 2 months since I find it more convenient than sublinguals daily. Every year I do blood tests and B12 is top of range. Not that this takes care of everything for someone still using. If I remember right, N2O blocks the processes B12 are involved in. It doesn’t just deplete it.