I have a weekend show this weekend, and was considering doing a session of the PEMF therapy for my horse. Has anyone done this? Is it worth the money?

I have mine done at least once a month, usually in conjunction with the chiro. I do try to schedule my PEMF 2 days before the barrel race 

Bump

Does it make them sore at all since the description says it's can be a deep tissue massage?

It hasn't mine. I always have my back done as well & I never feel any soreness after. I generally don't feel much difference with my back until the following day. 

IMO it's a waste of money. I don't believe in it nor does my performance vet. 

I recently had a great experience. I have a horse that had scar tissue on his back that was a few years old. He is also super sensitive and tends to hunker his back when being saddled. He was diagnosed with something called myofascial syndrome, which is similar to fibromyalgia in people. Anyways, I did a session on him and the scar tissue went down. When I went to ride him he never once hunkered his back, or pinned his ears which is something he has ALWAYS done for the past five years.

I personally am a huge fan.

I’m a huge fan, so much so that I bought my own Magnawave. I’ve used it for an array of problems and had great success in it helping. I use it for injuries, soreness, and general maintenance on my riding/driving horses. I use it on horses, myself, and occasionally my dogs. Completely worth the money imo. 

I feel it depends what type of PEMF machine they are offered. Not all PEMF machines are the same.

The gal I use is able to adjust everything about the treatment so she can control the depth/intensity/etc of what she is apply, based on the horse's specific needs. She also has a higher "medical grade" machine that she also uses on humans, in addition to animals.

She recommended to do 3 treatments in the first week, and then roughly 1 treatment per month thereafter. I did that for Red with his tendon issue. I can't say I noticed that it helped him move any better, but his tendon healed faster than my or my vet thought it would. Whether the PEMF helped, or not, we don't know for sure, but I personally feel that it did. My chiro also commented that Red was the most behaved for him adjustment (usually he gets a bit cranky) and then I told him I had done the PEMF for him, and he said that was probably why. Makes sense to me.

So as far as "is it worth the money" that you are asking, I think it depends what you wish to obtain from the therapy. What's your goal? What are you trying to help the horse with?

I got this done by my vet on my horse that has back soreness and after the treatment she has had no issues (and that was a couple of months ago)! I would highly recommend