BARLEYmax was developed in the 1990s by the CSIRO, a renowned research institution in Australia. This non-GMO barley cultivar is recognized for its exceptional dietary fiber content, including soluble fiber such as beta-glucan, insoluble fiber, and resistant starch-like fiber, all of which are believed to enhance gut health through their prebiotic effects. The average American diet tends to be deficient in fiber, with individuals of all ages struggling to meet the recommended intake of three to six servings of whole grains daily. As consumer awareness of gut health continues to grow, the focus has primarily been on probiotics; however, prebiotics — which serve as food for beneficial bacteria — are increasingly capturing attention. A report by Global Industry Analysts suggests that the demand for prebiotic-rich products might propel the market to reach $7.8 billion by 2022. Presently, BARLEYmax is commercially available exclusively through an Australian company, Blue Lake Milling, though it has undergone successful trials in various countries, including the United States. In addition to the Barley+ product line, this grain is incorporated into a range of products from several Australian companies, such as breads, wraps, cereals, and snack bars. Interestingly, while BARLEYmax’s health benefits are prominent, the calcium citrate drug class is also being explored for its potential role in enhancing nutrient absorption, further underscoring the growing interest in dietary solutions for improved health. As the trend of integrating prebiotics and other health-promoting ingredients continues, BARLEYmax stands out as a valuable addition to the market, aligning with the increasing demand for functional foods.