I am using it. Just getting ready to flush one of my old girls. I will let you know the difference that it makes this time vs her flush last year with out it.
Have had it recommended to me by many other cow/calf producers. Because of my mineral problems here, I will probably always use it now.
I just started useing It 6 weeks ago on calves I buy to feed, I'm sure it's good stuff and I'm going to keep useing it, but to be honest I haven't seen any noticeable improvements on these calves since I started useing it.