I help out with 2 very senior donkeys, one is 35 the other is 45. The 35yr old has arthritis and the owner was using Bute daily. We have trialed maxaflex for the last 2 months and I would say we have seen an improvement, he’s no longer on the bute and he is walking better, definitely no worse than before. A little worried about the cold damp weather coming, but will definitely continue using.