Feijoa (Acca sellowiana), also known as pineapple guava, is a nutrient-rich fruit recognized for its unique profile of bioactive compounds. It is naturally abundant in polyphenols, dietary fiber, and essential vitamins such as vitamin C, which contribute to its strong antioxidant capacity. Scientific studies have shown that feijoa’s polyphenols help neutralize free radicals, reduce oxidative stress, and support cellular health. Additionally, the fruit’s soluble fiber content plays a role in modulating gut microbiota and supporting digestive well-being. These combined properties make feijoa a promising ingredient for functional food supplements aimed at promoting overall health and vitality.