Calming Supplements for HOT Ex-stallion?

Try adding some rice bran and increase the senior up to 6lbs which is the min OR
You could switch to Enrich 32, with up to 2lbs of rice bran and some hay pellets and of course free choice hay
I would keep him on a ulcer supplement since he has a history of having issues with them but I would also remove all grains from his diet and replace them with fats and alfalfa pellets

I highly recommend a supplement from springtimeinc.com called Daily Calm. I've used it on two of my TB mares and it has worked wonders. Even after cutting the dose by half once they started responding. It doesn't make them at all dull either. I say more like it helps them to stop and think before acting up. I also second the rice bran. Both my mares are on a simple oats and rice bran diet with a simple multi vitamin supplement. They also get pasture and then hay in the winter.

I didn't realize there was a "minimum" for feeding Senior Feed. I know they have the charts on back but I've usually found those to be unhelpful and cause you to overfeed, at least with other brands...I tend to think of them as marketing for the feed company. After all, they tell you to use a little more than necessary, so you buy more, right? 4 lbs a day is actually working pretty well for my horse's weight, but is he lacking vitamins because of missing an extra 2 lbs?

Peggysue and Crossover, thank you for your input; I am very wary of putting alfalfa pellets into my horse's diet as alfalfa very quickly makes him hot. I don't have any experience with rice bran, though; what exactly does that do for them?

I'm reluctant to make too many changes to his diet at the moment; his weight is keeping up beautifully with his current grass hay, TractGard and Senior Feed and I don't want to mess that up or buy anything I don't need. I'm open to suggestions, but I'm mainly posting here about the joint and calming supplements. My horse definitely needs a joint supplement, with his history as a Steeplechaser and then eventer. His joints are pretty run down for a horse his age. I just need a good, inexpensive one that doesn't make him hot! What do you guys feed for joints?

And the calming supplements too, obviously. Crossover, how much Daily Calm is in a daily dose and how much does it cost per month?

Do you have a pic of him? If he wereMINE I would go with Enrich32 at least 1lb a day then add up to 2lbs of rice bran for the added calories.

If I remember correctly Purina Senior has alfalfa in it as well as the grains so double whammy to a horse that tends to get hot

The min is for the nutrition and yes it is too much for MOST horses.

Many times when you balance the nutrition the hotness goes away and all you will need to add would be a joint supplement like ActiFlex 4000 is what I use

*UPDATE* I put him on Cosequin last month (the cheapest one) and he is actually doing really well...I also put him on Magnesium 3000 and he is SO focused now! I think it's just that spring is gone so the mares aren't going crazy with hormones, plus the supplement helps "take the edge off", and he has been doing beautifully for me! We did well in our first USEA event together (at Novice) last month and have another competition in a couple of weeks. So thanks everybody; problem solved!