Are Fairlife Protein Shakes Good for You?

📌 Overview and Key Takeaways

Are Fairlife protein shakes good for you?

This is a Certified Nutrition Coach’s in-depth Fairlife protein shake review.

Last Updated Oct 9, 2026

Author and Medical Reviewer

Jack, CNC

Jack is a National Academy of Sports Medicine Certified Nutrition Coach.

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Disclaimer: This communication is for general informational purposes only and is not a substitute for personalized medical advice.

Fairlife Protein Shake Analysis

Are Fairlife Protein Shakes Healthy?

Fairlife is a brand of ultra-filtered milk distributed by the Coca-Cola Company.

Their Core Power protein shakes, which can be found at most big-box retailers and gas stations in the United States, are cheap, convenient, and among the most popular protein shakes.

But are they healthy?

Although Fairlife makes it easy and affordable to meet your protein needs, it uses a long list of problematic ingredients.

In particular, it uses ingredients that might cause painful side effects and even long-term health problems.

Before we take a deep dive into the ingredients, however, we should look at the Nutrition Facts.

Fairlife Nutrition Facts

Fairlife protein shakes contain more protein and less sugar than ordinary milk.

A 14 oz Fairlife Core Power Vanilla Protein Shake contains 170 calories, 26 grams of protein, and 5 grams of sugar.

14 fl oz of whole cow’s milk, on the contrary, has about 260 calories and 14 g of protein.

So, from a nutritional standpoint, a Fairelife protein shake looks like a great source of protein.

But just because it has a high protein to calorie ratio does not mean that a Core Powder shake is good for you.

Fairlife Ingredients

The ingredients list is by far the most important indication of whether or not a protein shake or powder is healthy.

Research shows that if you are eating a balanced diet – getting protein from a variety of sources – the type of protein shake (egg white, pea, whey, etc.) that you consume does not matter (J Nutr, 2023).

Some people will tell you that you should only consume protein shakes made from complete proteins – those that contain all the essential amino acids.

But the truth is that 99% of people easily meet 100% of their essential amino acid needs without a protein shake or powder (J Nutr, 2023).

There are exceptions – older adults, for example, should prioritize high quality, complete protein sources like eggs, meat, and fish – but most people just need to focus on meeting their total daily protein needs.

The point here is that what makes one protein shake or powder better than another has little to do with the type of protein.

Instead, what you should be evaluating is the ingredients themselves, and whether or not they are artificial and/or ultra-processed.

Here are the ingredients in a Fairlife Core Power Vanilla Protein Shake:

Filtered Lowfat Milk

The first ingredient and main source of protein in a Fairlife Core Power Vanilla Protein Shake is Filtered Lowfat Grade A Milk.

To make filtered milk, cow’s milk is passed through a semipermeable membrane which removes water and lactose (sugar).

What is left behind is milk with more protein and less sugar per ounce than ordinary milk.

It is important to note that despite all the processing, Fairlife protein shakes still contain lactose, a sugar which 36% of American adults cannot fully digest (NIDDK, 2018).

For this reason, they might cause digestive issues like bloating and diarrhea.

Thickeners

A Fairlife Core Power Vanilla Protein Shake contains three ultra-processed thickeners:

Carrageenan, Cellulose Gel, Cellulose Gum

They are added to replicate the creamy mouthfeel of whole milk.

Remember, Fairlife is made with low fat milk, which is not creamy.

So, to improve the texture, it relies on a cocktail of thickeners.

Although not necessarily bad for you in small quantities, ultra-processed ingredients like these are notorious for causing stomach upset.

Regularly eating certain thickeners, particularly carrageenan, can also alter the composition of your gut microbiome – the collection of microorganisms living in your digestive tract (North Clin Istanb, 2019).

These shifts, known as gut dysbiosis, have been shown to contribute to a range of chronic diseases, including obesity, diabetes, and certain cancers (J Exp Med, 2019).

Gut dysbiosis is so problematic because it can contribute to a cascade of issues, including intestinal permeability (a leaky gut lining), systemic inflammation, poor nutrient absorption (J Exp Med, 2019).

It is important to note that much of this research is still emerging, so more studies are needed to clarify these relationships.

That said, the preliminary findings suggest that because protein shakes are something you might consume regularly, if not every day, the cumulative effects of small amounts of potentially harmful ingredients is worth taking seriously.

Natural Flavors

Natural flavors are used to give Fairlife protein shakes their vanilla flavor.

Natural flavors are arguably better for you than artificial ones, but unlike food manufacturers, natural flavor manufacturers are not required to disclose their ingredients.

They can add solvents, preservatives, emulsifiers, carriers and other additives to a flavor that qualifies as “natural” under current regulations.

In case you were wondering, Fairlife probably does not contain real vanilla because it is expensive.

Artificial Sweeteners

Fairlife Core Power protein shakes are sweetened with two artificial sweeteners: acesulfame potassium and sucralose.

This will probably not come as a surprise, but artificial sweeteners are not good for your gut.

Specifically, they can disrupt your gut microbiome, which, as you just learned, can contribute to various types of chronic disease (Adv Nutr, 2019).

Vitamins

Vitamin A is added to Fairlife Core Power Vanilla Protein Shakes to replace the vitamin content lost through the removal of milk fat.

Vitamin D is added to help with the absorption of calcium and phosphorus in the small intestine.

Enzymes

Lactase is added to Fairlife Core Power Vanilla Protein Shakes to help with the absorption of lactose, the sugar in milk.

Ingredient Summary

All in all, a Fairlife Core Power Vanilla Protein Shake contains 12 ingredients, none of which, aside from milk, contain any significant nutritional value.

Moreover, half of these ingredients are added to make up for the nutrients, taste, and texture lost due to processing.

And worst of all, most of these ingredients might contribute to long-term health problems!

If I were you, I would just drink a glass of whole milk!

It contains ~15 grams of protein and none of the bad stuff.

Are Core Power Protein Shakes Good for You?

While Fairlife protein shakes might seem like a tempting option for your daily nutrition, these protein shakes are not as good for you as they claim to be.

In fact, I would argue that Fairlife protein shakes are not good for you based on the ingredients alone.

They do contain lots of protein and no added sugar, but they are also artificial and ultra-processed.

If you want a convenient, minimally processed protein source, check out Drink Wholesome.

Sources

1. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Definition & Facts for Lactose Intolerance. 2018.
2. Northern Clinics of Istanbul (North Clin Istanb). Food additives and microbiota. 2019.
3. The Journal of Experimental Medicine (J Exp Med). The gut microbiome: Relationships with disease and opportunities for therapy. 2019.
4. Advances in Nutrition (Adv Nutr). Effects of Sweeteners on the Gut Microbiota: A Review of Experimental Studies and Clinical Trials. 2019.

Editorial Guidelines

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This article was written by a Certified Nutrition Coach and reviewed by a Registered Dietitian. We rely on peer-reviewed research and trusted medical sources, and regularly update our content to ensure accuracy and clarity.