Microbiome Labs Mega IgG2000 a dairy-free immunoglobulin concentrate that supports healthy digestion and maintains healthy gut barrier function. Unlike other milk-derived immunoglobulins on the market, Mega IgG2000 is derived from bovine serum, making it lactose-free, casein-free, and beta-lactoglobulin-free. Supports a healthy mucosal immune system by maintaining healthy gut barrier function. Supports healthy detoxification Dairy-free, Gluten-free