8 Ways to Boost Glutathione Foods With L Glutathione: Avocado, Watermelon, and More GoodRx Boost your body's natural defense with these 5 superfoods that help increase Glutathione levels! 1. **Fruits** Watermelon, avocado, and grapefruit aren't just tastythey're packed with nutrients that support glutathione production, How Keeping Glutathione Levels Up Can Benefit Your Health & Your Vitamin D Status GrassrootsHealth Amazon.com: BIOSTACK Cell Shield with Setria Glutathione Liposomal Supplement with Vitamin C, Turmeric, and C3 Curcumin Complex Pure Reduced L Glutathione 500mg for Immune Support, Skin & Antioxidant Defense : Health