My 22 yr. old QH mare has arthritis in her hip. It causes her to limp severely at times. She & I played very hard for 18 years and  it has taken its tole on both of our bodies! 
There are aspirin products for horses, like Aspir-Ease which are a powder, a paste, a granule or gel, and there are MSM products in liquid, pellet and powder forms. 
I wasn't talking about bute. That is a short term solution. I am looking for something I can give her long term.
I had spoken to this person on chat & they have several old horses that they use all the time. They told me what to use, and how much, but not what brands they use.
Of course I didn't ask, I didn't think there were so many different brands of aspirin & MSM. I found 6 aspirin brands and 7 brands of MSM that the vet supply I use carries.
My mare is not happy being idle. She has been a working horse all her life & is not adjusting well to being "out to pasture" so to speak. I just want to make her more comfortable so she can enjoy a light load of work.
I plan on using her for a lesson horse again. She has done that off & on for the last 2 years for handicapped riders.
If I can ease her pain & the vet OK's it, I may just breed her one last time.
Here she is with my GD riding her. This one was taken 4 years ago.
		
		
	
	
This one was 3 years ago at a rodeo. She was bred at the time, and DH & I were turning back stock at this rodeo.
Here she is 2 years ago shortly after giving birth to her second foal. A stud colt. That is DH's favorite mare in background.
Jean
edited to add: This is the Grandmother of the Paint filly I have recently posted pics of.