Feeling worse after healthy foods like garlic, onions, broccoli, or supplements like glutathione or NAC? You're not crazyand you're definitely not alone. These foods are rich in sulfur, which is essential for Host glutathione is required for Rickettsia parkeri cell division and intracellular survival Nature Communications The Biological Functions of Glutathione Encyclopedia MDPI Full article: Comparison of three methods for in vivo quantification of glutathione in tissues of hypertensive rats