20% Immunoglulins Plus 10 mg Beta Glucan. KAL® Colostrum 500 dietary supplement is sourced from 100% pure New Zealand colostrum. The colostrum is obtained from the cow within 48 hours of calving and processed in New Zealand under a fully implement HACCP (Hazard Analysis Critical Control Point) program. BSE (Boving Spongiform Encephalopathy) is not known to exist in New Zealand. Each capsule features 20% lmmunoglobulins which includes all four of the key immunoglobulins; lgG lgM lgA and secretary lgA. This concentration of nutrients enhanced with Beta Glucan is intended to provide nutritive support for general health and well-being.