i dont know much about lamalert or freestep but ive heard amazing things about sportmax and my friend uses it on her jumping mare for bone spavin, only thing that keeps her sound and im tempted to try it on my mare with bone spavin!
I have had success with Lamalert on double dose for fatty pads and crest neck have almost finished forst pot of double dose and will be purchasing again to go ionto maintenence. They offer a money back garuntee so what is there to loose??
I used the cushings one, but on arrival I'm fairly certain (after reading the label( that it was mainly magnesium with some seaweed, which I could have bought far cheaper...