Any updates on how it is working ? 

I'm on month 5. I could feel a difference during the first month while I was still in the loading dose (1 injection/week). Now, as the end of each month approaches, I can feel when it's time for another one. So, yes, I definitely feel it works for my horse. He is noticeably more comfortable, less stiff, and uses himself more once injected.

Love love love summit. I use it or adequan. Adequan works better for one horse and Summit works way better on another.

I just ordered the loading dose today. 

I'm excited to see if it helps my old guy. 

I'm also new to learning the Summit. What is the reccommended loading dose per horse?

If anyone would like some really good info about what I have seen from Summit please msg me I currently have 4 horses and a dog on it and started on it back in January.

You start with a loading dose (I did for one horse and didn't do the loading for the other, I saw no difference in the effects in the long run) 1 shot weekly for 4 weeks. Then once to twice monthly per month thereonafter.

What is it used for.  I have not heard of it till now.

via Summit website "Summit Joint Performance® is the purest form of Chondroitin 4 Sulfate ever developed. It is a naturally derived, low molecular weight, compound and is the most effective and safest Chondroitin product available on the market today. Summit was developed by doctors and scientists for use in human corneal transplant surgeries. Later it was discovered to have incredible effects on the joints of horses when delivered via intramuscular injection."

Feel free to PM me for more info. I have 4 horses on it. 

I wish I knew of someone that sold this stuff.