Horse won't eat Grain or Supplements

MLS, I was thinking the same thing. My horse used to deny his grain when the supplements were just poured in. I have to make sure theyre mixed in really well now.

Yep - it's not always the grain.

OP - May not hurt to try other types of the supplement. If it's powder now, see if it comes in a pellet form, etc.

Hey guys!
Sorry I didn't reply sooner. They are in pellet form. She will take 2 bites, and then just turn up her nose at the rest.
CASEYMYHORSEROCKS.. Well, it's pretty hard to imagine that if I could afford to keep her on smartpaks, that I couldn't afford to have a equine dentist float her teeth? I'm sorry, but are you serious? Or were you just trying to be rude? Of course she has had her teeth floated! She is a $25,000 horse that my sponsor provided for me to ride.
To the rest of you, thank you so much for your suggestions!! I really appreciate it when people reply with helpful comments, and not just rude assumptions.

She sounds like my old guy. He turns up his nose at the medicated type supplements. I ended up using an injectable joint supplement when he was still competing heavily.

I've had one other horse like this, and he was also a TB. They are so picky lol. I talked to smartpak and they can make her supplements in a oral syringe, but she will probably end up hating me for having to shove it down her throat everyday :-/
Thanks for your help :)

Bells, I'm wondering if she's refusing the supplements because of them creating an imbalance. I'm leery of adding supplements to feed without bloodwork being done and then go from there. If it has, I've had good luck with adding about 2 tbsp of strawberry Koolaide with just enough water so it sticks to the pellets. Horses love strawberry so even jam might work.

Not all.

I think the oral dosing will work for short term. Then maybe start with one in her grain until you get her back to where she needs to be with all of them in her grain.

To be fair, I've met people who don't believe in getting their horse's teeth done "unless there's a problem" and then describe a problem the horse is having that is almost certainly teeth-related. Whether or not they can afford it is not the issue.

Glad to hear that in your case you're already on top of it

Strawberry kool-aid sounds like a good idea. I'm going to bring maple syrup, koolaid, and molasses with me and see which one works best! She is the pickiest eater I have ever come across lol.
I haven't had bloodwork done on her. I put her on SmartCalm Ultra and Mare Harmony after a episode she had while she was cycling. It was pretty awful. She has been on them for about 3 weeks and I can see a HUGE difference. I might actually get the bloodwork done though, it sounds like a good idea. Now that she has been on these supplements, she is a joy to work with. She is always focused, not grouchy, and doesn't act like a psycho when she is cycling.
Thanks everyone for taking the them to reply! I really appreciate it :)