Where is it found relatively large amounts of isoflavones are present in whole soybeans roasted soya nuts tofu tempeh soya milk meat substitutes soya flour and some soya protein isolateshow much is usually taken researchers suggest the equivalent of one serving of soya foods per day supports good health and the benefits increase as soya intake increaseslevel and distribution of isoflavone content per capsule is 40mg of natural product a 101 guaranteed extract product size 0