Independent protein reviews for sensitive stomachs.
THE PROTEIN REVIEW SHELF

Start with your ingredient concerns.

Compare milk sources, sweetening choices and added ingredients. Open each review for the evidence and the unknowns.

Research-based assessments, not personal tolerance tests. Some reviews contain commission-earning links.

Start with:

15 researched product families

Unflavored packaging. Package design and serving information can change.

Equip

Equip Prime Protein

Unflavored packaging. Package design and serving information can change.

Beef-derivedUnflavored option

A beef-derived alternative to compare when you want to move away from whey while keeping an animal-derived protein source.

Family packaging shown: Banana Bread. The purchase option below is Unflavored, 30 servings; the pictured flavor is not that option.

Legion

Legion Whey+

Family packaging shown: Banana Bread. The purchase option below is Unflavored, 30 servings; the pictured flavor is not that option.

Whey isolateFlavor-specific labels

A whey-isolate option for readers who want milk-derived protein. The linked Unflavored version should be checked separately from flavored Whey+.

Natural Unsweetened family packaging shown. The linked research source also covers other flavors.

Orgain

Orgain Organic Plant Protein

Natural Unsweetened family packaging shown. The linked research source also covers other flavors.

Plant-based familyMultiple flavors

Natural Unsweetened offers a pea, rice and chia blend with a creamer base. It is an unsweetened blend, rather than a protein-only powder.

Vanilla family packaging shown. Always check the ingredient and allergen panel for the flavor being purchased.

Orgain

Orgain Simple

Vanilla family packaging shown. Always check the ingredient and allergen panel for the flavor being purchased.

Plant-basedCoconut sugar

An Orgain plant family sweetened with coconut sugar, with nut ingredients to check. Useful for comparing sweetener choices, rather than seeking an unsweetened powder.

Unsweetened & Unflavored, 20-serving packaging from the official product variant.

Ora

Ora So Lean & So Clean

Unsweetened & Unflavored, 20-serving packaging from the official product variant.

Plant blendUnsweetened option

An unsweetened plant blend that also lists coconut milk, inulin and enzymes. Compare those additions as well as its sweetening approach.

Unflavored & Unsweetened, 28-serving package shown.

KOS

KOS Organic Plant Protein

Unflavored & Unsweetened, 28-serving package shown.

Plant blendUnflavored & Unsweetened

A named Unflavored & Unsweetened option combining five plant sources. Compare the blend itself, not just the absence of added sweetness.

Unflavored Naked Pea, 5 lb packaging from the manufacturer.

Naked Nutrition

Naked Pea

Unflavored Naked Pea, 5 lb packaging from the manufacturer.

Single-source optionUnflavored

Unflavored Naked Pea lists yellow pea protein alone. A useful starting point when comparing single-source powders with multi-ingredient blends.

Unflavored Naked Rice, 5 lb organic brown rice protein packaging.

Naked Nutrition

Naked Rice

Unflavored Naked Rice, 5 lb organic brown rice protein packaging.

Brown rice proteinSingle listed ingredient

An unflavored, single-ingredient brown rice option. Compare it when you want rice protein itself rather than a finished pea-and-rice blend.

Unflavored Naked Whey, 5 lb grass-fed whey packaging from the manufacturer.

Naked Nutrition

Naked Whey

Unflavored Naked Whey, 5 lb grass-fed whey packaging from the manufacturer.

Milk-derivedUnflavored option

Unflavored Naked Whey lists grass-fed whey protein. It remains milk-derived and is distinct from the separately named Naked Whey Isolate.

Smooth Vanilla US 500 g packaging. Facts below refer to the Smooth Vanilla panel, not Just Natural.

Nuzest

Nuzest Clean Lean Protein

Smooth Vanilla US 500 g packaging. Facts below refer to the Smooth Vanilla panel, not Just Natural.

Pea protein isolateFlavor-specific sweetening

The US Smooth Vanilla panel lists pea isolate, natural flavors and thaumatin. No added sugar does not make this an unsweetened version.

Unflavored Warrior Blend packaging. Package size pictured differs from some manufacturer options; use the current size-specific panel.

Sunwarrior

Sunwarrior Warrior Blend

Unflavored Warrior Blend packaging. Package size pictured differs from some manufacturer options; use the current size-specific panel.

Pea, hemp & gojiUnflavored version

Unflavored Warrior Blend combines fermented pea, hemp and goji with an MCT ingredient. Coconut oil and acacia gum remain part of the formula.

Vanilla Classic Plus family packaging. Ingredient discussion is specific to the cited Vanilla formula; check size-specific serving information.

Sunwarrior

Sunwarrior Classic Plus

Vanilla Classic Plus family packaging. Ingredient discussion is specific to the cited Vanilla formula; check size-specific serving information.

Five-source blendVanilla assessed

Classic Plus Vanilla combines five named plant sources and includes guar gum and steviol glycosides. It is a sweetened option to compare with unflavored powders.

Dutch Chocolate Plant+ packaging shown. The linked US catalog version is Chocolate, 20 servings; verify the retailer selection and current panel.

Legion

Legion Plant+

Dutch Chocolate Plant+ packaging shown. The linked US catalog version is Chocolate, 20 servings; verify the retailer selection and current panel.

Pea & rice blendChocolate purchase option

A pea-and-rice blend distinct from Legion Whey+. The linked Chocolate, 20-serving option is a flavored formula, not an unsweetened substitute.

Micro Ingredients Pea Protein, 5 lb packaging. Check the current selected package before ordering.

Micro Ingredients

Micro Ingredients Pea Protein

Micro Ingredients Pea Protein, 5 lb packaging. Check the current selected package before ordering.

Pea proteinUnsweetened5 lb bag

An unsweetened pea option in a 5 lb bag. Our small review sample flags conflicting taste expectations, preparation context and a practical closure check.

DEAL SUPPLEMENT Unflavored Pea Protein, 5 lb packaging. Current labels take priority over packaging shown.

DEAL SUPPLEMENT

DEAL SUPPLEMENT Pea Protein

DEAL SUPPLEMENT Unflavored Pea Protein, 5 lb packaging. Current labels take priority over packaging shown.

Pea isolateUnflavored5 lb bag

An unflavored pea-isolate option in a 5 lb bag. Sampled reports disagree about taste and mixing, so preparation details deserve attention before buying.