Selenium. Selenium is a trace element and known antiviral agent that your body needs to make the antioxidant glutathione (GSH). Selenium-rich foods include organ meats, chicken, brown rice and brazil nuts.
Recommended dose: 140–200 mcg/day as seleno-methionine
Whey protein. Studies point to whey protein as a supplement that increases GSH.1
Sulfur-rich foods. GSH contains sulfur, which is the third most abundant mineral in the human body. GSH production is dependent on the presence of amino acids containing sulfur, notably cysteine, which you can get by eating sulfur-rich foods including: most high-protein foods such as meat, fish, eggs, seeds and yogurt, broccoli, cabbage, kale, onions, garlic, green onions, Brussels sprouts and cauliflower. Some people choose to supplement sulfur via methylsulfonylmethane (MSM), which should be used according to the directions on the…