Additives (per Kg): Vitamin A 10,000iu, Vitamin D3 1,000 iu, Vitamin E (alpha tocopherol acetate) 60 mg, zinc sulphate 5 mg, calcium iodate 1.0 mg, sodium selenite 0.15 mg, antioxidants (d-mixed tocopherols 500mg), preservatives The packet says that there is nothing nasty about this dog treat.