Many of the amino acids have profound therapeutic properties. For example doctors speak highly of whey protein isolate, WPI. When proteins are cooked some of the amino acids may be destroyed. For example the amino acid Cysteine, together with Selenium is a precursor to Glutathione Peroxidase, a natural super antioxidant in the body. Redbak WPI is manufactured with cross micro filtration and ultra filtration to preserve the nutrients. WPI has been shown to reduce the risk of protate cancer and has been proven to have many other healing properties. Redbak is Australia's preferred WPI.