Super happy so far... heavy emphasis on the "so far" since I have not started my Chihuahua's research on it yet. COA and documentation was clear and easily found, and cross-referenced on labs site. Lot #s matched the COA's and all bottles, at least to my very untrained eye, are in great shape with nothing inside or outside giving me concern. Plus I love the additional testing I see for endotoxin. Im a fan so far and plan to return for more assuming my Chihuahua dont be deaded afterwards.