Wow, that IS a lot of stuff....
I agree with poppy, vet check first.
I had really great results with nutrena life design senior for getting my 300lbs underweight QH mare up to weight. Plus Omega Horseshine. VERY pleased with that. It contains flax, and yeast and it has put a shine on her that makes you squint and she feels like she's been sho-sheen-ed. You might want to Google that, it takes care if a bunch of issues you're dealing with.
I'd also have the vet check for arthritis, since you were told to give a painkiller(aspirin) and MSM.
The electrolytes are only needed if he is sweating a lot. He should get his needed minerals from the feed and a saltlick.
With the senior feed and the horseshine you could get rid of 99% of the supplements you're currently giving. And I bet it's cheaper, too.
As for the proud flesh, have the vet look at it, it might have to come off and be pressure bandaged until it heals up.
Feet...typical TB feet, I take it. A set of light racing plates might help him to grow enough new horn to be comfy without shoes later. Right now he shouldn't have to deal with any pain, since pain will slow the weightgain.
Judging by what you currently feed, you must be buying at TSC...they carry the senior feed and the omega horseshine, too Posted via Mobile Device