Is Peanut Butter Gluten Free? - Tasting Table
Briefly

Peanut butter lovers can find concerns regarding gluten content in both homemade and commercial peanut butter. While peanuts are naturally gluten-free, additives in commercial brands may introduce gluten. Moreover, cross-contamination can occur during production unless facilities are dedicated to gluten-free products. The FDA regulations ensure that labeled gluten-free products contain less than 20 ppm of gluten, while certified gluten-free products undergo third-party testing. Consumers should verify labels and consider trusted brands to enjoy peanut butter without gluten worries.
Most commercial brands of peanut butter are also gluten-free, but where things get complicated is that some peanut butters contain additives for improved taste.
According to Beyond Celiac, around 1% of Americans suffer from celiac disease, which means consuming gluten can cause damage to the small intestine.
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