IRM a concentration of PRO-3 peptides from Bovine Colostrum are nature's only bio-identical, immune modulators and regulators. Whether symptomatic or non-symptomatic, PRP-3s help modulate, balance and regulate immune response and cytokine response that causes inflammation in the body for optimal health - ......... ........ NOTE: IRM - IMMUNE RESPONSE MODULATOR ORAL SPRAY is on back order until early Summer.... But there is a better alternative Their professional division product called PRO Colostrum-IC - Immune Concentrate- IMMUNE CONCENTRATE ORAL SPRAY is the EXACT same product but better - Please call 561-337-9435 if you would like this alternative product.