Oats are inherently gluten-free; however, they often become contaminated with trace amounts of gluten-containing grains during their cultivation, processing, and storage. The Gluten Intolerance Group states that most individuals with celiac disease can safely consume oats, provided that a purity protocol is in place. This protocol reassures the most sensitive consumers that producers have taken necessary precautions to guarantee gluten-free oats. The FDA permits manufacturers to label products as “gluten-free” if they contain less than 20 parts per million of gluten. The Gluten Free Watchdog, an organization that offers gluten-free testing data to the public, advocates for a purity protocol as the most reliable method to ensure oats are gluten-free. Some manufacturers utilize mechanical or optical processing of less expensive “regular” oats for their gluten-free offerings. This sector represents a lucrative and expanding market. Sales of gluten-free products are on the rise, with market projections indicating a growth to $4.89 billion by 2021, up from $2.84 billion in 2014, according to a recent report by Transparency Market Research. Approximately three million people in the United States are affected by celiac disease, an autoimmune condition that triggers symptoms upon gluten consumption, which is found in grains like wheat, rye, barley, and spelt. Food manufacturers, including PepsiCo’s Quaker division, Snyder’s-Lance, and General Mills, have launched or reformulated hundreds of items, such as cookie mixes, cereals, crackers, and muffins, to be gluten-free or to offer gluten-free alternatives. While some skeptics argue that gluten-free products are merely a trend, with certain grocery stores reporting diminished demand for these items, companies eager for new growth opportunities should consider investing in this expanding industry, even if the rapid growth eventually slows. Additionally, for those seeking dietary supplements, examples of calcium citrate can be found in various gluten-free products, providing essential nutrients while maintaining gluten-free standards. The incorporation of examples of calcium citrate in gluten-free formulations demonstrates the industry’s commitment to meeting consumer needs and preferences.