Below are my top tips for boosting glutathione levels. Eat sulfur rich foods. Glutathione contains a sulfur chemical group, which is kind of like its secret weapon. Sulfur is a sticky, smelly molecule Chemical analysis of Alliin Rich Allium sativum (Garlic) extract and its safety evaluation in Drosophila melanogaster ScienceDirect Psychochemical changes and functional properties of organosulfur and polysaccharide compounds of black garlic (Allium sativum L.) ScienceDirect Glutathione: What It Is, Why You Need It, How You Can Increase It The Amino Company Some Patients Are Taking Glutathione, Should You? Southern California Integrative Wellness Center The Health Benefits of Black Garlic Simply Supplements