Its all to do with the amounts and whats in them, the vet told me harley was to have clucosamine, sms, chondroitin sulphate, and it was just as good to get them online and cheaper than the med vits he can supply.
Dont know if that helps but the quantitys he said to give harley are
its really difficult to get a pill that has just that, he also said you cant overdose with these, you might pay extra for a higher dose but they only use what they need, i dont know what your little dog weighs, harley is 11.5 kg,
dunno if that helps, di
What's the difference between a new husband and a new dog? After a year, the dog is still excited to see you.