Immuno-gG ® SBI Powder is a dairy-free immunoglobulin concentrate formula that supports healthy digestion and immune function. This purified source of immunoglobulin G (IgG) is derived from bovine serum so can be used as an alternative to colostrum, making it free of lactose, casein and β -lactoglobulins. This powdered formula is convenient, palatable, and easy to dose.