What are antioxidants? Fruits, vegetables, and other nutritious foods made from plants contain antioxidants. A number of vitamins also work as powerful antioxidants to combat free radicals, which are harmful to our health. Sources for Antioxidants: REFERENCES Antioxidants.TheNutritionSource.https://www.hsph.harvard.edu/nutritionsource/antioxidants/.PublishedMarch3,2021.AccessedSeptember2,2021.InteractiveNutritionFactsLabel-VitaminandMineralsChart.U.S.Food& DrugAdministration.https://www.accessdata.fda.gov/scripts/interactivenutritionfactslabel/assets/InteractiveNFL_Vitamins&MineralsChart_March2020.pdf.AccessedSeptember2,2021.