JB listed some of the best things you can give to build immunity...Ester C and garlic being some of the best. I also give Salmon Oil (flax seed oil is also good) Milk Thistle (it's an antioxidant and helps keep the liver functioning properly). It also helps to get the vet to give you the correct dosage for body weight (you're a vet tech though aren't you?) for the supplements to have the optimal effect. I was very lucky because one of Pookie's oncologists is very much into the holistic aspect of treatment. It also helps to give them fresh fruit when you can. Whenever I'm eating fruit, we all share
Blueberries are really
good for builiding immunity and have antioxidant properties. I mash them up with plain yogurt and stuff their kongs with them.