I have three cats,a kitten 20 months,a female tortoise shell 3 years old and an extra cat I ended up with black Burmese 9-10 years old.i specifically brought in- fusion msm for older cat due to arthritis problems but am giving all three cats the supplement once a day.There coats are glossy , eyes are bright and shiny and are more easier to settle down of a night now( maybe because it's helping with digestion).With older cat he's become quite happy because joint problems have become less noticeable .Hoping this helps anyone with arthritic animal because I was using tumeric paste with not much success but this definitely easier to feed them because very fine powder and with good mix into food doesn't seem to be noticed by my fussy felines.Thankyou for great product will definitely keep buying this one