Here is a list of supplements that can be used for BARF:
This list is not yet complete.
Check Wikipedia out for details of health benefits
Buying these items as organic as possible is prefered!
*acerola (high in Vit.C)
*New Zealand green-lipped mussel
*yeast
*Aloe Vera
*Spirulina
*Honey

Fresh Herbs:
Basil ...anti-stress herb, not for pregnant bitches, very good for lactating bitches though!
Stimulates milk production. Can be given from 3 months old onward, increases appetite, helps the digestion.
garden cress... from 3 months old onward, blood-purifying, good for the digestion
blackberry leaves...
rasberry leaves... blood-purifying, an aid against diarrhea, stomach and bowel problems
given in the last days of pregnancy relaxes the muscular system of the womb.
Parsley, chervil,

All information given on this page is entirely based on my own experiences and research.