Have a serious conversation with your vet about management of arthritis instead of starting the horse on an ineffective feed through supplement.
While MSM can be beneficial, any glucosamine, PSGAGs, etc. in a feed through formula are not absorbed by the horse's digestive system. You may as well shred up money and put it in her feed. As well most glucosamine is manufactured with use of shark fin cartilage and is one of the leading causes of the world wide decline of sharks.
I have not used Pentosan, but would be interested in the results. There is also a generic IM glucosamine available which is quite reasonably priced. However I've always had the best results with a combination of Adequan and Legend. As well increasing the horse's turnout time, having the horse very well conditioned with a good warm up and cool down session, and a consistent work schedule of a light-moderate ride every day or twice a day and keeping the horse lighter in weight (ie not over a 5 in body score) will help manage the arthritis better than any drug.
Thank you for your input Anebel. I was hoping you would chime in.
I decided today that I am going to have the vet out to check her again. As it stands she is sound, however I want to keep her that way and now that she is starting to get that slight hitch I want to nip it before it gets bad. Most people don't notice it and think I am seeing things, but I have known and ridden this horse for 15 years. I know her better then she knows herself lol.
I have a wonderful farrier who I have a lot of faith in and has done great things for her and him and my vet work together. So I will have the vet out to check her over and we will talk about a routine with her. I have always been of the mind that supplements in feed are a waste of money but sometimes its good to get outside opinions.
So I appreciate any and all input. I know adequan and legend work great together, I have had great results with it before. But as I said the loading dose of it is murder on a tight budget.
She lives outside in the summer unless there is a bad storm. She gets turned out a minimum of an hour a day in the winter(an hour being storm days when there is no outdoor turn out so its arena turn out as stalls are done) but is usually out from 8am - 5pm when its not storming or sheer ice in the paddocks. She gets worked 5 days a week, we don't jump at all in the winter so its flat work or lunging. She is on a carefully worked out diet and snuggled up in warm blankets and a quarter sheet when riding with proper slow warm up and cool out.
Its time to sit down with my vet, farrier and coach and see what we can come up with.
I am still very open to everyone elses opinions and suggestions please. I want to make sure I have explored all options.