Cysteine: 2.2g. Highest quality milk protein and complex carbohydrate, plus 9g of Creatine and 18g of Branched Chain Amino Acids per 300g daily serving. Microfiltered Whey Protein Isolate (Milk), Maltodextrin, Creatine Monohydrate, Branched Chain Amino Acids (L-Leucine, L-Isoleucine, L-Valine), Natural Flavouring.