One of the most popular new ingredients in dairy-free and vegan products is oats. That’s great news for vegans, but what about people who need to eat gluten-free? You may be asking, “Can I drink oat milk if I’m gluten free?”

Oats are a nuanced ingredient: they are naturally gluten free, but standard oats are frequently contaminated with wheat, barley, or rye during growing, harvesting, or processing. That contamination makes many conventional oat products unsuitable for people following a strict gluten-free diet. However, some oats are grown and handled to avoid cross-contamination — often called purity protocol oats — and oat milks made from those oats can be safe for gluten-free consumers.

To determine whether the oat creamer at a coffee shop or the oat milk on the supermarket shelf is truly gluten free, ask the barista which brand they use or request to see the packaging. If the product label or the manufacturer can confirm purity protocol oats and gluten-free certification, it’s more likely to be safe. When in doubt, contact the manufacturer directly to ask about oat sourcing and testing protocols — that’s the only reliable way to be sure.

For oat milks to be reliably gluten free, they should be made with purity protocol oats and carry a recognized gluten-free certification. Some manufacturers meet both criteria, while others may claim “gluten free” without using purity protocol oats, which can be confusing. Do your homework, and if you have celiac disease or a severe gluten sensitivity, stick to brands that both source purity protocol oats and provide certification.

I’ve compiled information below about brands that use purity protocol oats, brands with gluten-free labeling, and those that do not make gluten-free claims so you can make safer choices.

Is Oat Milk Gluten Free?

Oats themselves are naturally gluten free, but they carry a high risk of cross-contact with gluten-containing grains. Cross-contamination can occur at planting, harvesting, transport, storage, or processing. The safest oat products for people with celiac disease or severe gluten sensitivity are made from purity protocol oats and are certified gluten free by a reputable organization.

Manufacturers that claim “gluten free” but do not use purity protocol oats may be less safe. If you need to avoid gluten for medical reasons, prioritize brands that disclose their oat sourcing and testing practices or that list a recognized gluten-free certification. When in doubt, reach out to the manufacturer for details.

Oat milk remains a popular plant-based option and can be a nutritious addition for many: oat milk generally contains more fiber than many other plant milks and dairy milk. But for those who must avoid gluten, choose oat milks specifically produced and tested to be gluten free.

Brands Using Purity Protocol Oats for Oat Milk

Better Body Foods Oat Milk – The manufacturer discloses that their oats are grown in England and processed in Italy. They state they test raw ingredients and the final product to ensure they are gluten free. The company confirmed they use purity protocol oats for the Oatsome line (oat milk, chocolate oat milk, barista milk, coffee creamer, and creamer lite).

Elmhurst 1925 – Elmhurst states gluten-free claims and certified gluten-free status on some products. When contacted, the manufacturer confirmed they use purity protocol oats. Elmhurst offers several oat-based seasonal products and creamers that are vegan and free from carrageenan.

Good Mylk – The manufacturer confirmed their product uses certified gluten-free, purity protocol oats along with other simple ingredients. They also offer oat mylk in concentrated packets.

Mooala Oat Milk with Coconut – The company indicates its product is made with gluten-free oats. Some of their oat-based products carry a purity protocol claim, while other formulas (such as Moola Simple Oat Milk) may not include a gluten-free claim. Always check the packaging for the specific product.

Is Oatly Gluten Free?

Oatly is widely available in coffee shops and stores. According to the company’s product information for the U.S. market, their U.S. products use certified gluten-free oats and are certified gluten free by a recognized certifier. The company states their U.S. products are made without common allergens and that they source certified gluten-free oats for U.S. products. If you rely on oat milk for medical reasons, confirm the certification on the package for the specific product and region.

Gluten-Free Labeled Oat Milk

Califia Farms Nitro Latte with Oat Milk — labeled gluten free and subject to third-party testing by gluten-focused organizations. Check the product packaging and testing results if available.

Chobani Oat Milk — Chobani states their oat milk is free from gluten and that they use organic gluten-free oats sourced from Saskatchewan, Canada. They also offer oat-based creamers, yogurts, and other products; review individual product labels for gluten-free claims.

Minor Figures Barista Oat — Certified gluten free by GFCO; made from non-GMO oats sourced from the UK and northern Europe. Their barista creamers and oat lattes are widely used in coffee shops and available in some retail channels.

Silk — Silk’s oat milks and oat milk creamers display gluten-free claims on packaging, though the company does not always specify whether the oats used are purity protocol oats. Review labels and contact the manufacturer for sourcing details if necessary.

So Delicious — So Delicious labels many of its oat milks as gluten free on packaging. As with other brands, check specific product labels and contact the company for sourcing and testing details if you require purity protocol oats.

Planet Oat

Planet Oat’s packaging has previously carried a gluten-free claim, but the company’s online information and FAQs have changed over time. Reports indicate that some representatives have downplayed the concept of purity protocol oats, and the brand’s current statements may not guarantee purity protocol sourcing. If you need strict gluten-free assurance, verify current sourcing and certification directly with the company before consuming.

What Oat Milk is Definitely Not Gluten Free?

Any brand that does not make a clear gluten-free claim on its oat milk or oat-based product should be treated with caution by people who must avoid gluten. If a manufacturer explicitly states their oat beverage is not gluten free or that they do not make a gluten-free claim due to cross-contamination risk, avoid those products.

Examples of manufacturers that do not claim gluten-free status for specific oat beverages include Pacific Foods (their organic oat vanilla is not labeled gluten free due to cross-contact risk) and Rise Brewing Co. (they have moved away from certified gluten-free ingredients for some oat milks). Some Califia Farms organic oat milks also are not labeled gluten free. Always check the product label and manufacturer statements.

If you rely on a gluten-free diet for medical reasons, pin or save this information and verify each oat product before consuming. When in doubt, contact the manufacturer to confirm whether their oats are purity protocol and whether the finished product carries a recognized gluten-free certification.