Stevia is easy to avoid in theory: buy a powder that does not list it. The harder part is deciding what should replace it.

An unflavored whey concentrate gives you a one-ingredient formula, but it still contains milk and usually more lactose than an isolate. An unsweetened plant powder avoids dairy and sweeteners entirely, but it can cost more for the same amount of protein. A flavored powder made with coconut sugar is easier to drink on its own, but it is no longer sugar-free.

We compared four current U.S. products that take genuinely different approaches:

• Naked Whey Unflavored — one-ingredient whey concentrate
• Promix Unflavored Whey Isolate — a higher-protein whey isolate
• Orgain Organic Protein Natural Unsweetened — an unsweetened plant option
• Orgain Simple Creamy Vanilla — a flavored plant option sweetened with coconut sugar

The quick answer

Promix Unflavored Whey Isolate is the strongest overall choice if you tolerate dairy and want the most protein for the money. It supplies 30 grams of protein per serving, costs about $1.67 per 25 grams of protein at the current one-bag price, and contains no stevia.

Naked Whey is the simpler whey formula. Its only ingredient is grass-fed whey protein concentrate. The trade-off is a large 5-pound purchase and the characteristics of a concentrate rather than an isolate.

Orgain Natural Unsweetened is the best fit here for someone wanting plant protein without stevia, added sweetener or a flavored shake. It works more like a neutral ingredient for smoothies and recipes.

Orgain Simple Creamy Vanilla is the practical flavored alternative. Coconut sugar replaces stevia, so it tastes sweet for a straightforward reason. It is also the most expensive option in this comparison per equivalent amount of protein and contains peanut and tree-nut ingredients.

Direct comparison

Price comparison

Prices were checked on the manufacturers’ U.S. websites on October 26, 2026. These are ordinary one-time prices before tax, shipping or promotions.

The last column matters because serving sizes are not equivalent. Promix looks more expensive per scoop than Naked, but its scoop supplies 30 grams of protein instead of 25. Orgain Simple has the same shelf price as Orgain Unsweetened, yet fewer servings and slightly less protein per serving.

Price per 25 grams of protein was calculated as:

price ÷ total grams of protein in the container × 25

1. Promix Unflavored Whey Isolate: the strongest value if dairy works for you

Promix gives you 30 grams of protein from two scoops, and the front of the current 2.5-pound bag identifies 34 servings. The manufacturer lists the one-time price at $68 and says the unflavored isolate contains no gluten, soy, gums, fillers or artificial ingredients.

The important distinction is isolate versus concentrate. Whey isolate is processed to remove more non-protein material. Promix says this formula contains less than 1 gram of lactose per serving. That may matter to someone who tolerates small amounts of lactose but finds a concentrate less comfortable.

It does not make the product dairy-free. Whey remains a milk protein, and a person with a milk allergy should not treat “low lactose” as permission to use it.

Our judgment: choose Promix when protein density, a smaller purchase than Naked’s 5-pound tub, and lower lactose are more useful than having a one-ingredient formula.

2. Naked Whey Unflavored: the simplest whey formula

Naked Whey’s appeal is clarity. The current unflavored label lists one ingredient: grass-fed whey protein concentrate. One serving is two scoops, or 30 grams of powder, with 25 grams of protein.

The 5-pound container carries a high $139.99 upfront price, but it contains 76 servings. That brings the cost to about $1.84 per serving and the same amount per 25 grams of protein.

Naked states that the product is gluten-free and NSF Contents Certified. Those are separate facts. NSF Contents certification addresses whether a supplement’s contents match its label and whether it meets relevant testing requirements. It should not be described as independent gluten-free certification.

Our judgment: Naked is the better choice for someone who wants whey with the shortest possible ingredient list and expects to use it consistently. Promix is the better value by protein amount and the better candidate when minimizing lactose matters.

3. Orgain Natural Unsweetened: the useful plant-based blank canvas

This is the option for someone who does not want stevia replaced by another noticeable sweetener. Orgain says Natural Unsweetened contains neither stevia nor erythritol and describes it as unsweetened and unflavored.

The current label supplies 21 grams of protein from organic pea, brown-rice and chia-seed proteins. It is made without dairy, lactose or soy ingredients, and Orgain labels the product gluten-free.

Its role is different from a ready-made vanilla shake. It makes more sense in a smoothie, oatmeal or recipe where fruit or another ingredient supplies the flavor. If you mix it only with water, “neutral” should not be confused with “designed to taste like nothing.”

Our judgment: this is the most flexible option for a dairy-free reader who wants control over sweetness. You pay more per equivalent amount of protein than with either whey option.

4. Orgain Simple Creamy Vanilla: flavored without stevia

Orgain Simple answers a different question: what if you want a flavored powder but dislike stevia?

The product uses organic coconut sugar instead. Its protein comes from peanuts, chia seeds, pumpkin seeds and almonds, with 20 grams per serving. Orgain labels it gluten-free and states that all flavors contain peanuts and tree nuts, including almonds and coconut.

Coconut sugar is still added sugar. That is not automatically a problem; it is simply the trade-off that creates a conventionally sweet vanilla powder without stevia or erythritol.

Our judgment: choose it for flavor and a shorter-looking plant formula, not for protein value. At about $3.17 per 25 grams of protein, it costs substantially more than the other three products here.

How to choose among them

Choose Promix if:

• you tolerate milk protein;
• you want an isolate with less than 1 gram of lactose claimed per serving;
• you care most about protein value.

Choose Naked Whey if:

• you want one ingredient;
• you prefer concentrate;
• you are comfortable buying a 5-pound container.

Choose Orgain Natural Unsweetened if:

• you avoid dairy;
• you want no stevia, erythritol or added sweetener;
• you plan to add your own flavor.

Choose Orgain Simple Vanilla if:

• you want a flavored plant powder;
• you prefer coconut sugar to stevia;
• peanut and tree-nut ingredients are suitable for you.

What “without stevia” does—and does not—tell you

Avoiding stevia is a taste or formula preference. It does not automatically make a powder healthier, gentler on digestion or more suitable for celiac disease.

A no-stevia product may be:

• completely unsweetened;
• sweetened with sugar;
• sweetened with monk fruit or another high-intensity sweetener;
• flavored but not sweetened;
• unflavored because it is intended as an ingredient.

That is why the replacement matters more than the absence of stevia by itself.

Gluten-free note for strict avoidance

All four manufacturers use gluten-free or “no gluten” wording for the products reviewed. We did not verify a current, product-specific independent gluten-free certificate for these four exact SKUs.

For someone with celiac disease or strict gluten avoidance, that distinction may affect the buying decision. Recheck the current package and manufacturer information before buying, especially after a formula or packaging change. A gluten-free statement, NSF Contents certification and sport certification answer different questions and should not be treated as interchangeable.

Research method and sources

This is a research-based comparison. RecoverFitNow did not physically test these four powders, so we do not make claims about taste, texture or individual digestive response.

Product pages and label images checked October 26, 2026:

• Naked Whey Unflavored
• Promix Unflavored Whey Isolate
• Orgain Organic Protein Natural Unsweetened
• Orgain Simple Creamy Vanilla

Prices and formulas can change. Compare the current label with the product and size named above before ordering.