Glycemic Control - Ghaedi K, Ghasempour D, Jowshan M, Zheng M, Ghobadi S, Jafari A Effect of zinc supplementation in the management of type 2 diabetes: A grading of recommendations assessment, development, and evaluation-assessed, dose-response meta-analysis of randomized controlled trials. Crit Rev Food Sci Nutr. (2023-May-15)

When shopping for supplements, consider that the percentage of elemental zinc varies by form. The elemental content is what appears on the supplement label, so it’s easy to understand exactly how much you are getting and see that you are taking a safe dose. How Much Is Too Much?Hunt JR. Bioavailability of iron, zinc, and other trace minerals from vegetarian diets. Am J Clin Nutr. 2003;78(3 Suppl):633S-639S. doi:10.1093/ajcn/78.3.633S

Brown KH, Hambidge KM, Ranum P, Zinc fortification of cereal flours: current recommendations and research needs. Food Nutr Bull. (2010-Mar)Zinc citrate and picolinate are other forms of zinc supplements that are considered to be well absorbed, and the zinc oxide form is likely not absorbed as well.