IgG Protect Powder by Ortho Molecular Products

Bovine colostrum powder is a fit if your gut feels reactive after travel, hard training, or antibiotics, or if stool secretory IgA (the antibody your gut mucosa makes) is low. It also suits people tracking hs-CRP (an inflammation marker) who want a non-fish, dairy-derived protein that targets the gut-immune interface. The 5 g colostrum here is a maintenance-level dose; many clinical protocols use higher amounts for repletion. Vegans and anyone with milk protein allergy should skip it.

Colostrum provides IgG antibodies (proteins that bind microbial fragments and food antigens) so they are less likely to trigger immune flares in the gut. It also contains growth factors that help tighten intestinal permeability (how easily the gut lining lets things through). Added lactoferrin binds iron, making it harder for certain bacteria to grow, and it can calm neutrophil activity (white blood cells that drive acute inflammation). Together, these actions explain why some see steadier digestion within 4 to 8 weeks.

Mix one scoop in cool water or a non-hot beverage once daily as the label suggests. Many clinicians use it on an empty stomach or away from protein-heavy meals so the antibodies encounter the gut lining before heavy digestion, but you can take it with food if needed. If you are repleting after antibiotics or intense training blocks, higher daily totals are often used short term under guidance.

Avoid if you have a true milk protein allergy. If you are lactose intolerant, symptoms are uncommon at this amount but can occur; start low and assess. Transplant recipients or those on strong immunosuppressants should get clinician clearance. Pregnancy and breastfeeding data are limited in supplements, so defer to your obstetric clinician. Competitive athletes: colostrum is not banned, but discuss anti-doping policies before use.