On the protocol that I am following you take Whey powder twice a day. The info I have says "A source of high quality protein, amino acids to aid liver detoxification pathways. Whey is considered a cysteine donor, and increases glutathione in the body, even if diseased. It contains good levels of branch-chained amino acids. It is a good source of glutamine - the most abundant amino acid in the body - sulphur containing amino acids, as well as the branched chain amino acids." I also have been told to eat eggs and other sulpher containing foods which Dr Cutler mentions in the same paragraph and so far it hasn't caused me any issues.