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Front of Momentous Whey Protein Isolate Vanilla 25-serving jar

Grass-Fed Whey Protein Isolate

A premium grass-fed whey isolate with 20 g of protein per 90-calorie scoop, NSF Certified for Sport status and a short, gum-free ingredient list.

7.9

Good

Nutrition Reviews score

Weighted across efficacy, quality, value, experience & transparency. See breakdown

Form
Powder
Serving
1 scoop (25 g, Vanilla)
Servings
25
Per serving
$2.40
NSF Certified for Sport
Gluten-freeNon-GMO
Check price on AmazonBuy from the brand$59.99

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Last reviewed September 29, 2026 by the Nutrition Reviews Editorial Team · How we review

Our verdict

Momentous whey is a top pick for athletes who need certainty: NSF Certified for Sport status, lot-by-lot testing and a minimalist, gum-free formula built on grass-fed isolate. You pay heavily for that assurance and get only 20 g of protein per scoop, so value-focused lifters will find better deals elsewhere.

Best for

  • Drug-tested and professional athletes
  • Minimalist ingredient lists without gums or artificial sweeteners
  • People with sensitive digestion

Skip it if

  • Budget shoppers
  • Lifters who want 25 g or more protein per scoop

How it scored

Our five-factor score out of 10. Factors are weighted by how much they matter to the outcome you’re paying for. Methodology

7.9
Good

out of 10

  • Efficacy30%8.3

    Key ingredients at clinically studied doses, and how strong the evidence is.

  • Quality & Purity25%9.5

    Third-party testing and certifications, manufacturing standards, contaminant testing, recall history.

  • Value20%6.2

    Cost per effective serving compared with category peers.

  • Experience15%8.0

    Taste, mixability, texture and tolerability from aggregated buyer and creator feedback.

  • Transparency10%6.0

    Full label disclosure (no proprietary blends), available COAs, honest marketing.

Our review

Momentous positions itself as a performance brand for elite athletes, and its whey isolate sells on purity rather than flavor. The powder uses grass-fed whey protein isolate from European dairy farms, cold-processed and microfiltered according to the brand, with the ProHydrolase enzyme blend added. A 25 g scoop of Vanilla delivers 20 g of protein and 90 calories, and the rest of the ingredient list is natural flavors, salt, monk fruit extract and stevia, with no gums or artificial sweeteners. The Unflavored version is simply whey isolate plus enzymes.

Twenty grams sits at the lower end of what research suggests for a strong post-workout muscle protein synthesis response, particularly for larger or older lifters, so some users will want a heaping scoop or a second serving. Evidence that added protease enzymes meaningfully improve results in healthy adults is limited, so ProHydrolase is better viewed as a small extra than a reason to buy.

Verification is where Momentous leads. NSF's Certified for Sport database lists the Essential Grass-Fed Whey line, and the company says every production lot is independently tested, with certificates of analysis published online. That makes it one of the safest picks for drug-tested athletes.

The trade-off is cost: $59.99 for 25 servings works out to about $2.40 per serving, or roughly 12 cents per gram of protein, although the brand's subscription discount lowers that. buyer ratings sit around 4.2 to 4.4 stars, with praise for quality and easy digestion and split opinions on taste, mixing and a recent reformulation.

What’s inside

Key ingredientPer serving
Grass-fed whey protein isolate

Sourced from European grass-fed cows, per the brand; provides all essential amino acids.

23.3 g (20 g protein)
ProHydrolase (protease enzyme blend)

Added to support protein digestion; evidence for performance benefits in healthy adults is limited.

200 mg
Monk fruit extract and stevia

Natural non-nutritive sweeteners in the Vanilla and Chocolate flavors; the Unflavored version has none.

—

Flavors & variants

VanillaChocolateUnflavoredStrawberryPure CinnamonMint ChocolateSpiced ChaiChocolate Coconut

Testing & quality

Says every production lot is independently tested and publishes certificates of analysis; its whey protein is listed in NSF's Certified for Sport database.

Creator video reviews

Independent creators reviewing Grass-Fed Whey Protein Isolate on TikTok and YouTube.

4 positive0 mixed1 critical

Pros & cons

What we like

  • NSF Certified for Sport, with lot-level testing and published certificates of analysis
  • Grass-fed European whey isolate with no gums, fillers or artificial sweeteners
  • Only 90 calories per 20 g protein serving
  • Unflavored version contains just whey isolate and enzymes

Watch-outs

  • About $2.40 per serving (roughly 12 cents per gram of protein) before subscription discounts
  • 20 g of protein per scoop is lower than most competitors
  • buyer reviews are split on taste, mixability and a recent reformulation
  • ProHydrolase is labeled as a proprietary enzyme blend, and its benefit is not well established

Questions buyers ask

Is Momentous whey safe for drug-tested athletes?
It is one of the strongest options. NSF's Certified for Sport database lists Momentous Essential Grass-Fed Whey in Chocolate, Vanilla and Unflavored, and the company says every production lot is independently tested with published certificates of analysis. As with any certified product, check your specific flavor on nsfsport.com before relying on it.
Why does it have less protein per scoop than other brands?
Momentous uses a smaller scoop: about 23 g of whey isolate per serving delivers 20 g of protein and 90 calories. The protein content per gram of powder is high; the serving is simply smaller. If you want around 30 g of protein after training, one and a half scoops gets you there, which raises the effective cost per shake.
What is ProHydrolase?
ProHydrolase is a protease enzyme blend that Momentous adds at 200 mg per scoop to support protein digestion. Evidence that added enzymes meaningfully improve muscle gains in healthy adults is limited, so treat it as a minor extra rather than a deciding factor.
Sources we checked (6)
  1. 1.livemomentous.com/products/essential-whey-protein
  2. 2.livemomentous.com/pages/momentous-standard
  3. 3.nsfsport.com/certified-products/listing-detail.php?id=1410568
  4. 4.nsfsport.com/certified-products/listing-detail.php?id=1410573
  5. 5.amazon.com/dp/B09F1SWMFG
  6. 6.amazon.com/dp/B09F21D98X

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Read the research