Super Rich Yeast Plus with Bio-formed GTF-Chromium (Glucose Tolerance Factor) and Bio-Formed Selenium has been recognized as an excellent source of essential nutritional elements. One serving (16 grams) supplies 25 mcg of Selenium and 100 mcg of GTF Chromium derived form brewers yeast. One serving also provides essential amino acids, vitamins, minerals and trace elements. It also contains the protein-digesting enzymes papain and bromelain, which are derived from the papaya and pineapple fruits. Papain and bromelain serve to aid in the digestion of proteins in naturally concentrated foods such as yeast. These enzymes help digest proteins into amino acids, which are then used as building blocks for enzymes, hormones and tissues. Without adequate protein-digesting enzymes, amino acid deficiency results.