Immunocal-

Immunocal®, is an all-natural protein with the highest biological value of any edible protein, and clinically proven to raise glutathione levels.* Glutathione enhances your immune system, is a key detoxification enzyme, provides cellular energy and acts as your body’s master antioxidant. Studies & Standards https://www.immunotec.com/en-US/kokuavida/studies-and-standards