Green lipped muscle extract and SA37

Just want a little advice please I have been advised to give Deacon Sa37 and Green lipped muscle extract with his meals... Sa37 I used with Jamie, but not heard of the other... probably have but not registered it Where do I get it and what is it for?
Also I am thinking of keeping Deacon on the diet long term, if he is okay with it, will he need these supps long term too... and by that I mean past 12mths?
Thanks in advance