I’ve gotten to the point now that I try something, and only continue with it if I see results. So now I’m down to 24/7 hay/water, a ration balancer, flax and paprika. (I could feed a copper supplement rather than paprika, but I can’t find anything I like in Canada.)
I’ve been through dozens of supplements, wanting to be a “good horse mom.” At the end of the day, I looked at coat, feet, muscle, movement and attitude. I spent serious money and a lot of time to see very minimal results. So I started letting them run out.
It was recommended that I put my TB on flax a few months before the Warmblood inspections this summer. I noticed a lovely natural shine pretty quickly. As her winter coat came in, it was remarkably softer. Paprika came shortly after. I decided a ration balancer made more sense for me than a multivitamin.
As others have said, a good supplement will work if the horse is missing what it supplements.