Just recently found out my horse is a confirmed bleeder. He had 10 days off after I found out, and was on SMZ tablets for a week. Went to a barrel race last weekend and ran him on 5 cc of Lasix. I went IV two hours out. I could barely get him to high lope the pattern. He was pretty much sleeping through our run. I gave him an electrolyte paste after our run. I did talk to my vet, and he said some horses take a while to get used to it.

Any advice? Maybe I should give the electrolyte paste before my run? I think I'm going to try 4 cc at the next race instead of 5..

A half an hour after I gave him the Lasix he didn't even want to eat any hay. He was pretty much sleeping at the trailer. And usually he is always eating hay.

It really dehydrates them. Most lasix users refer to it as " Wash out"  . My mare only gets 3cc 1 hour out. She pees so much that after her run and for the next TWO DAYs she looks and feels like absolute crap. My vet told me to really get a lot of electrolytes In her for few days before she runs. 

It will take them a bit to get used to it, but that seems like a lot. My Standardbred is HUGE (16.3 and probably 1,000-1,100 in race condition ) gets 5cc IV 4 hours out. Most tracks require 4 hours out, but a vet told me it is most effective closer to 3, so it’s even losing effectiveness by that point. And she has to go a mile.

It’s a diuretic, so they’re going to pee a lot. I don’t give her an electrolyte paste after the race, but a lot of people do. She has access when she gets home afterwards though. However, she’s on daily electrolytes as Lasix literally drains out the electrolytes

Thank you! In your opinion what is the most effective electrolyte? I have apple a day but he won't touch it. 

You might think about getting a nebulizer.  They really work for a bleeder .  Silver Horse care has a good one.  And it’s really affordable 

This is what I use, but it's cherry flavored. My mare is a piggy though and will eat anything and everything.

https://www.bigdweb.com/product/horse+health+electro+dex+equine+electrolyte+-+5+lb.do?sortby=bestSellers&refType=&from=Search&ecList=6&ecCategory= 

Try sprinkling jello on top of the electrolytes.  That worked for me.

I'm in the same boat as you. I haven't gotten my mare scoped but she was showing all the classic signs of bleeding. However, she seems to be clocking about half a second slower on the lasix. Which sucks. I tried Apple a day and she won't even touch her food with it. So I'm going to give her an electrolyte paste this weekend and see if I see a difference. 

One of my geldings likes his electrolytes from orange Gatorade.  He will drink it from a bucket, but he really really likes Gatorade powder.  He will just lick up the dry crystals.

This is the one that I give daily. They also have a paste you can give, but I use the powder. I like that it doesn't have any sugar added. Smells like oranges.

I use it year round on all our horses.

It was developed for the 1996 Olympics. 

https://kppusa.com/product/summer-games-electrolyte/