Whether or not a pea protein powder is low FODMAP depends on the processing of the peas and if the powder contains additional ingredients, including some artificial sweeteners that are considered high FODMAP. Typically, pea protein powders without artificial sweeteners or additives are considered low FODMAP because they are stripped of almost all of the carbohydrate and fiber content, which is the part of the peas that contain oligosaccharides (the “O” in FODMAP). If you are following a low FODMAP diet, avoid pea protein powders that contain sugar alcohols including sorbitol and xylitol.