Hello, 
We have recently purchased a German Shepherd (Friday), he is 6 months of age, we already have a beautiful nearly 2 year old Gordon Setter (Maya) and a 15.5 year old working dog. 
I see on our new pup`s diet sheet to give him fish oil and Glucosamine, I have been giving our other 2 dogs fish oil for quite some time but researching online today I have come across a few topics saying when giving fish oil you also need to give them vitamin E. Is this information correct? How much vitamin E would I give? 
and now onto the glucosamine, have found out that the Wagner MSM joint powder is the same ingredients as joint guard but cheaper, how much would I give per kg of body weight?? 
Thank you for your help.