B004NNINLI 4Life Transfer Factor Plus Tri-Factor Formula – Immune System Support with Zinc, Super Mushroom Blend (Maitake, Shiitake, Agaricus), and Extracts of Cow Colostrum and Chicken Egg Yolk – 60 Capsules

4Life’s No. 1 immune system product with 4Life Transfer Factor, super mushroom blend, and zinc Supports immune cells (natural killer, macrophages, B & T cells) Educates immune system to quickly recognize, respond to, and remember potential health threats Our Team: 4Life product formulations are developed through research by doctors and scientists About 4Life: Bringing you quality products to support your immune system & overall health since 1998