Is Lactoferrin Dairy Free? Is it Safe for Milk Allergies or Lactose Intolerance?

Updated September 2025! Whenever we hear the prefix “lact” our brains automatically make a connection to dairy. But many compounds like lactic acid, lactates, and lactylates are usually dairy free. So that makes some of us wonder, is lactoferrin dairy free too? Unfortunately, it is a dairy ingredient, but it might not be what you expect. In this post, I’ll explain lactoferrin, who it is most concerning for, and potentially non-allergenic options on the horizon.

Understanding Lactoferrin for People with Milk Allergies and Lactose Intolerance

Lactoferrin has moved into the supplement spotlight in recent years for its potential ability to protect against bacterial, viral, and fungal infections. In fact, the scientific community is even touting it as a potential therapeutic for the most troublesome virus of our time. And it might be a great option for some people. But if you have any issues with dairy, here’s what you need to know.

What is Lactoferrin?

Despite the name, lactoferrin is not derived from lactose. It’s actually a type of whey protein in milk. It’s found in both human milk and animal milk, but is highest in colostrum, the first milk made after a baby is born.

Can Lactoferrin be Safe for some Milk Allergies?

As humans, we are not allergic to the lactoferrin in human milk, but we can be allergic to the lactoferrin protein from other mammal milks, like cow’s milk. Supplements are typically made from cow’s milk, which is often labeled as bovine milk on the bottles.

When a doctor states that someone has a milk allergy, it means they are allergic to the proteins in milk of another species. The two main categories of proteins in milk are casein and whey. People can be allergic to casein proteins, whey proteins, or both. If someone is allergic to whey proteins, then lactoferrin should be avoided. But if someone is allergic to only the casein proteins, not to whey proteins, they are not technically allergic to lactoferrin.

That said, supplements aren’t always purified. Some might contain milk powder or other components of milk, or they might simply have trace amounts of casein remaining.  If you are dealing with a milk allergy, it is essential to discuss the safety of lactoferrin with your physician before trying it. They might also have some alternate supplement suggestions that are dairy free.

If you and your physician decide lactoferrin is a safe supplement for you to try, look for a brand that is as purified as possible. This requires contacting the company to learn more about the ingredients, source, and any cross-contamination risk. We’re the dairy-free experts, so we aren’t able to make educated recommendations on specific dairy products.

Is Lactoferrin Lactose-Free? Is it Okay for Lactose Intolerance?

Pure lactoferrin is lactose-free, and should not cause any symptoms for people who are just lactose intolerant. But it’s important to seek out a brand that is touted as lactose-free specifically. Some brands might not be sufficiently purified, or might contain lactose or milk powder as a filler.

Is Lactoferrin from Precision Fermentation Dairy Free?

Some companies are using precision fermentation to create lactoferrin. They may market this product as animal-free, plant-based, or by other similar terms. That’s because they genetically modify an organism to produce the lactoferrin. But the lactoferrin produced is intended to be bioidentical to mammal lactoferrin.

Precision fermentation companies like Turtle Tree are working to create lactoferrin that is bioidentical to lactoferrin from cow’s milk. So it is still a dairy compound that could cause a reaction in people with milk allergies or a milk protein intolerance.

But two companies, Effera and Desert Harvest, have released human lactoferrin supplements created to be bioidentical to the lactoferrin in human milk. These might be suitable options for people with cow’s milk or goat’s milk allergies. Studies thus far show “low allergy risk” and “no immune reaction,” but the ones we have read do not have people with a severe milk allergy in the study. Contact the company to learn more if you are dealing with an allergy.

It is Still Dairy.

If you strictly avoid dairy for any other social, environmental, religious, ethical, or medical issue, typical lactoferrin might not be suitable for you. It is definitely a dairy-derived supplement, and is still typically made from cow’s milk.

Before trying any new supplement, always consult your physician. This post is for informational purposes only. It is not medical advice, and is not intended to treat, diagnose, advise, or replace your own due diligence.

More Dairy & Dairy-Free FAQs

• Which are the Best Calcium Supplements?
• Besides Calcium, What Other Nutrients Might I Miss on a Dairy-Free Diet?
• Is Vegan Dairy Free? Usually, But These Products are Not!
• Why Do Some Non-Dairy Products Contain Milk?
• Should Lactose Intolerant Children Consume Dairy?

For More Dairy-Free Guidance, Get Go Dairy Free!