IgG Plus is a powder form of serum-derived immunoglobulin concentrate. Due to its higher immunoglobulin concentration (>50%) than our original Extreme Immunity powder, IgG Plus is an even better natural source of IgG for use in digestive health, immune support and sports nutrition products. As a unique alternative to Colostrum products, IgG Plus contains no lactose and is free of milk proteins, such as casein and -lactoglobulin, which can be poorly tolerated by some people. It contains very low levels of saturated fat. IgG Plus is manufactured from non-GMO ingredients at a FDA-inspected facility and in accordance to current Good Manufacturing Practice (cGMP). IgG Plus has been recognized as GRAS (Generally Recognized As Safe) by the US FDA.