Colostrum (providing 20% immunoglobulins), lactoferrin, beta-glucan (1.3/1.6 of yeast cell membranes), vegetable capsule, bulking agent: cellulose; anti-caking agents: Magnesium stearate and silica.ContributionsPer capsule% RDA*Calcium500 mg-of which Calcium14.5 mg1.8%Lactoferrin100 mg-Bta glucan5 mg-* RDA: Recommended Daily Allowance.