Kirkland Signature Oat Milk

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Common questions

Is Kirkland Signature Oat Milk healthy?

Kirkland Signature Oat Milk scores 60/100 on Scout's independent analysis of ingredients, additives, and lab results — a fair-to-good score — solid, with tradeoffs. This oat milk is ultra-processed and contains sunflower oil, which is high in omega-6 fatty acids and can promote inflammation.

How processed is Kirkland Signature Oat Milk?

Kirkland Signature Oat Milk is NOVA Group 4: Ultra-Processed Foods.

Which ingredients drive Kirkland Signature Oat Milk's score?

In Scout's ingredient-by-ingredient analysis, Oatmilk, Oats, Sea Salt count in its favor; Sunflower Oil, Natural Flavor are flagged as ingredients of concern. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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Kirkland Signature Oat Milk

Kirkland Signature
60 Fair

Analysis updated August 2026 · How Scout scores

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Near you

Kirkland Signature is carried at Costco stores. Find one within 25 miles.

At a glance

Beneficial ingredients 7
Harmful ingredients 2
Owned by Costco
Category Milk
Summary

This oat milk is ultra-processed and contains sunflower oil, which is high in omega-6 fatty acids and can promote inflammation. While it includes beneficial ingredients like oats and essential vitamins, the presence of natural flavors and multiple additives reduces its overall healthiness. The processing level and inclusion of seed oil significantly impact its score.

Key ingredients 16

Oats
Very Good

Oats are a whole grain that provides dietary fiber and essential nutrients. They are known for their heart health benefits due to beta-glucan content. Oats can help in maintaining healthy cholesterol levels.

Benefits

Rich in fiber, which supports digestive health and may help lower cholesterol levels.

See more about Oats →
Oatmilk
Good

Oatmilk is a plant-based milk alternative that is naturally lactose-free. It is often fortified with vitamins and minerals to enhance nutritional value. It provides a creamy texture and is suitable for those with dairy allergies.

Benefits

Provides a source of dietary fiber and can be fortified with essential nutrients like calcium and vitamin D.

See more about Oatmilk →
Sea Salt
Good

Sea salt is a natural source of sodium and trace minerals. It is less processed than table salt and retains some beneficial minerals. It enhances flavor without the need for excessive processing.

Risks

Excessive sodium intake can lead to hypertension, but moderate use is generally safe.

Benefits

Provides essential sodium and trace minerals, enhancing flavor naturally.

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Vitamin A
Good

Vitamin A is an essential nutrient important for vision, immune function, and skin health. It is often added to fortified foods to enhance nutritional value. It supports overall health and well-being.

Risks

Excessive intake can lead to toxicity, but this is rare from fortified foods alone.

Benefits

Supports vision, immune function, and skin health.

See more about Vitamin A →
Vitamin D2
Good

Vitamin D2 is a plant-based form of vitamin D used to fortify foods. It is essential for calcium absorption and bone health. It helps prevent deficiencies, especially in plant-based diets.

Benefits

Supports bone health and calcium absorption.

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Vitamin B12
Good

Vitamin B12 is an essential nutrient important for nerve function and red blood cell formation. It is often added to plant-based foods to prevent deficiencies. It is crucial for those following a vegan or vegetarian diet.

Benefits

Supports nerve function and red blood cell formation.

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Ascorbic Acid
Good

Vitamin C — beneficial even when serving as a preservative.

Benefits

Provides antioxidant benefits and supports immune function.

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Filtered Water
Neutral

Filtered water is used as a base in many beverages and is essential for hydration. It does not contribute any calories or nutrients. It serves as a solvent for other ingredients in the product.

Benefits

Essential for hydration and acts as a carrier for nutrients in the body.

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Calcium Carbonate
Neutral

Standard formulation ingredient — neither beneficial nor harmful at typical use.

Risks

Excessive intake may lead to hypercalcemia, but this is unlikely from food sources alone.

Benefits

Provides a source of calcium, supporting bone health and preventing osteoporosis.

See more about Calcium Carbonate →
Dipotassium Phosphate
Neutral

Dipotassium phosphate is used as a stabilizer and emulsifier in food products. It helps maintain the texture and consistency of the product. It is generally recognized as safe when used in food products.

Risks

Excessive consumption may affect kidney function, but typical food use is considered safe.

Benefits

Helps maintain product stability and consistency.

See more about Dipotassium Phosphate →
Gellan Gum
Neutral

Gellan gum is a gelling agent used to stabilize and thicken food products. It is derived from bacterial fermentation and is considered safe for consumption. It helps maintain the desired texture in plant-based milks.

Benefits

Helps maintain product texture and stability.

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Vitamin E Acetate
Neutral

Vitamin E acetate is a form of vitamin E used to fortify foods and provide antioxidant benefits. It helps protect cells from oxidative damage. It is generally considered safe and beneficial in moderate amounts.

Benefits

Provides antioxidant benefits and supports immune function.

See more about Vitamin E Acetate →
Vitamin A Palmitate
Neutral

Vitamin A palmitate is a synthetic form of vitamin A used to fortify foods. It helps ensure adequate intake of this essential nutrient. It is effective in maintaining vision and immune health.

Risks

Excessive intake can lead to toxicity, but this is rare from fortified foods alone.

Benefits

Supports vision and immune health.

See more about Vitamin A Palmitate →
Locust Bean Gum
Neutral

Locust bean gum is a natural thickener derived from carob seeds. It is used to improve texture and stability in food products. It is generally recognized as safe and is minimally processed.

Benefits

Helps improve texture and stability in food products.

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Natural Flavor
Bad

Natural flavor is a catch-all term for flavoring agents derived from natural sources. It lacks transparency and can include a wide range of substances. It is often used to enhance taste without providing nutritional benefits.

Risks

Lack of transparency can be concerning for those with allergies or sensitivities.

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Sunflower Oil
Very Bad

Sunflower oil is a seed oil high in omega-6 fatty acids, which can promote inflammation if consumed in excess. It is often highly processed, which can degrade its nutritional quality. It is not recommended for regular consumption due to its high omega-6 content.

Risks

High omega-6 content may promote inflammation when consumed in excess.

See more about Sunflower Oil →

Processing

Group 4 · Ultra-processed

Ultra-Processed Foods

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