Looking for the best protein powder for a sensitive stomach in 2025? Whether you’re dealing with lactose intolerance, bloating, or just want a gentle, easy-to-digest protein, this guide has you covered. We’ve reviewed the top gut-friendly, low-FODMAP, and clean ingredient protein powders that won’t upset your stomach. From whey isolates to plant-based formulas, these picks are ideal for anyone seeking comfort and nutrition in one scoop.