BARLEYmax was created in the 1990s by CSIRO, a renowned research institution in Australia. This non-GMO barley variety was recognized for its exceptional dietary fiber content, which includes soluble fiber like beta-glucan, insoluble fiber, and resistant starch-like fiber. These components are believed to have prebiotic effects that may enhance gut health. In general, dietary fiber is deficient in the typical American diet, with individuals of all ages struggling to consume even one serving of the recommended three to six servings of whole grains each day. At the same time, consumer interest in gut health is increasing. While the primary focus has been on probiotics, prebiotics—the nourishment for beneficial bacteria—are now capturing more attention. According to a report by Global Industry Analysts, the demand for prebiotic-rich products could propel the market to reach $7.8 billion by 2022. Currently, BARLEYmax is commercially available only through Blue Lake Milling, an Australian company, but it has been successfully tested in several other countries, including the United States. In addition to the Barley+ range, this grain is featured in various products from other Australian companies, such as breads, wraps, cereals, and snack bars. Interestingly, products like tums calcium citrate are also being explored for their potential benefits in gut health, highlighting the growing intersection of different dietary supplements. As consumer awareness continues to rise, the incorporation of tums calcium citrate and other prebiotic sources like BARLEYmax may significantly enhance dietary options.