I use Healthy Coat Antioxidant Tabs and Biotin Powder from:
http://drsfosterandsmith.com
I use Rick's Multivitamin from:
http://www.jbpet.com
My guys got diarrhea from Grizzly Salmon Oil and Lipiderm Caps.
They used Missing Link Regular Formula well, but since I switched to the Plus with Glucosamine, they had been scratching more, do I stopped using it.
Almost all their treats contain Omega 3 and 6 and Linoleic Acids. I read that when used with Omega 9, it cancels out the 6.
I buy everthing on line, and I like:
http://naturalpetmarket.com http://onlynaturalpet.com