I have a 3 1/2 month old GSD. The breeder had her on Eagle food as well as Pet-tabs plus multi-vitamin. I have since switched her to Orijen Large breed puppy. I have been giving her 1/2 a tab of the Pet-Tabs plus as well. I have been reading a lot on here lately and am concerned I may be giving her too much calcium with the added supplement. Any thoughts? She is also on a joint supplement and some salmon oil squirted on the kibble. She is a little under weight do to picky eating, but we are working on that.