5 Natural Ways to Increase GLUTATHIONE 10 Foods That Contain Glutathione Core Med Science TECHNOTIP Broccoli is a nutrient dense superfood that can help the immune system in a number of ways. Packed with Vitamin C: Broccoli, like oranges, is a great source of this powerful antioxidant, Looking to boost your immunity this respiratory virus season? Add broccoli to the menu! It has vitamins A and C, and the antioxidant glutathione, all of which can help protect your body