Well, quick, Googeling gave at least these sources of B-15 aka Pangamic Acid
Pangamic Acid is found in:
- Whole grains such as brown rice
- Brewer's yeast
- Pumpkin and sunflower seeds
- Apricot kernels
- Beef blood
Here is more
Hmm, should click those links eh?

Ohwell, maby I get it right next time