She is already on a quality puppy food but being the runt she seems to have a little weaker immune system. I have some canned j/d left from my old lab that we had to put down last year and i know it is good for skin and of course joints. I'm going to mix it with her puppy food and feed it out so it doesn't go to waste. Any supplements i can add just to give her a boost? She's 8 months old by the way.