They do several different blends and a maintenance mixture which works out the cheapest- it's a hit-all supposed to eliminate the need for other supplements.
I chatted to Jeanette Brakewell about it as she's been using it on bob and has found it very helpful for his focus and apparently he has stopped trying to kill people in the stable!!
Absolutely none! horse won't touch them, ate a sack and a half of TopSpec balancer and has refused to touch the stuff since. Have also tried Farriers Formula, Formula4Feet, Outchine, Copra etc etc and she won't toch any of them. Also tried veggie oil, loved it for three weeks and won't touch it anymore.
Would feed balancer or foot supplement from choice but the Beast says not!