my vet recomends it for the dog, 4 doctors said it may be of some use, oe said it woldnt poison me andy any thing else was a bonus.
natures best.co.uk usualy has it fairly cheep
my dosage is 2000mg a day
get the with condroitin ones, apparently glucosamine is pretty much worthless as your body makes enough naturaly but a bit more may help. condroitin sucks water into the joint and helps cushion it.
the stuff i got also has ginger and rosehip extracts, no idea how usefull they are, but i’ve gone from not being able to walk to considdering buying another bike in under a month so cant be all that bad.