No stomach issues whatsoever.
I am also reading my current issue of The Hollywood Dog magazine and they have a recipe for a supplement it reads as follows.....
Blend all ingredients thoroughly and keep them refrigerated.
5 oz Soybean Oil (or Olive Oil)
1 oz Cod Liver Oil
1 oz Wheat Germ Oil
1 oz Flax Seed Oil
1 clove of Garlic or 1 tsp garlic powder
Use Daily:
1 tsp for up to 25 pounds
2 tsp for up to 50 pounds
3 tsp for up to 100 pounds.
The magazine article says that this combo eliminates toxins, boosts the immune system, and stops frequent vet visits.
Sounds interesting and maybe it's worth a try.