Grass-Fed Beef Protein Isolate (1lb.)
14 servings $1.57/Serving
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Product Details
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True Nutrition's Grass-Fed Beef Protein Isolate is fat-free with 0g of sugar. This makes it a perfect protein for Paleo enthusiasts and offers athletes a protein-packed alternative to help support muscle building.
Ingredients: Beef Protein Isolate.
Amino Acid Profile (Per 100g)Amino Acid Amount Alanine 9.0g Arginine 7.6g Aspartic Acid 6.2g Cystine 0.1g Glutamic Acid 11.1g Glycine 21.0g Histidine 1.1g Isoleucine 1.7g Leucine 3.9g Lysine 3.9g Methionine 0.09g Phenylalanine 2.4g Proline 11.5g Serine 3.3g Threonine 2.2g Tryptophan 0.2g Tyrosine 1.0g Valine 2.8g -
A low score is not a strike against a product
It means researchers haven't studied that pairing yet. Whey isolate scores low for joint health because almost no one has tested it there, not because it works against your joints. A score reflects the state of the research — not product quality, purity, or nutrition content. Most pairings sit low for the same reason: research funding has concentrated on a handful of well-studied questions, and everything else is simply unexamined.
What the number means
Each score estimates how strong the published human research is between one product and one goal. We weigh study design first (meta-analyses and randomized controlled trials count for more than mechanistic or animal data), then sample size, consistency across studies, and how recent the work is. The score says nothing about quality, safety, purity, or nutrition content.
9–10 Extensively studied: Multiple meta-analyses or systematic reviews of RCTs, pointing the same direction.
7–8 Well studied: Multiple RCTs on this product, or on its immediate class, for this outcome.
4–6 Some research: Human trials exist but are small, short, mixed, or run on a closely related substance.
2–3 Early research only: Mostly mechanistic, animal, or lab evidence. Plausible, not yet established in people.
1 Not yet studied: No meaningful research connects this product to this goal.
Why some goals aren't scored for some product types
Not every goal is a question you can meaningfully ask of every product. Carb powders have nothing to say about hormone support, and a fruit powder has nothing to say about muscle growth. Asking anyway would produce a column of 1s that reads like a verdict rather than an absence. Each product is scored only against the goals its research literature actually addresses. In the grid, those cells are marked as not scored rather than given a number.
What "pending review" means
Some products have been identified and their reasoning written, but the literature review isn't complete. Those carry no citations yet and we don't claim an evidence tier for them — the number shown is a working placeholder, not a finding.
How blends are scored
Some products are single substances and some are blends of several. When a product is a blend, we score the product as a whole and name the component the evidence actually comes from — so a greens blend's gut score is attributed to the greens in it, and a pre-workout's energy score to the caffeine and beta-alanine in it. The research was run on those components, not on our particular formula, and saying so is the difference between a citation and a claim.
Why some products share a score
Products built on the same underlying substance share a score, because that substance is what the studies actually tested. Trials run on standard whey isolate or a specific collagen peptide, not on a branded product. Where a variant has a documented functional difference, such as hydrolysis speeding digestion, we note it in that product's reasoning instead of inventing a separate score.
What "what the research studied" means
That column names the exact form used in the underlying studies: whey protein isolate, hydrolyzed collagen peptides, pea protein isolate. We include it so nothing here reads as a claim that our specific products have been clinically tested. The studies are on the substance. Our products are built from that substance.
About the study links
Where a score links out, that link points to a real, published human study (PubMed, PMC, or the journal's own page) that fed into that score — not a single citation "proving" the claim, but one of the studies actually reviewed. Not every score has a linkable study behind it: many reflect a body of general nutrition research (protein intake and satiety, for example) rather than one paper, and some reflect the informed absence of any research at all. In both of those cases we don't force a link.
Limits
This is a directional guide built from peer-reviewed, PubMed-indexed literature and published meta-analyses. It is not medical advice, and scores will move as new research publishes. We review it periodically rather than treating it as settled.
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Clean, Honest Ingredients
- GGGreg G.Verified BuyerRated 2 out of 5 stars3 days agoGrass fed Beef Protein
It digests great, however, the flavor TO ME tastes burnt. I got the fudge brownie flavor, and when I mix it it and either drink or eat with oats or rice cakes, it tastes burnt. So, I would like to try some other flavors before I knock it too much. Because the quality is unbeatable, I’m just not a fan of the flavor.
TNTrue Nutrition6 minutes agoHi Greg,
Thank you for sharing your feedback! We're glad to hear the product digests well for you, and we really appreciate you noting that the quality is unbeatable.
We completely understand that the fudge brownie flavor didn't hit the mark for your palate, as flavor preferences can be really personal. It's great that you're open to trying some other flavors to find one that works better for you. We hope you'll find a flavor option that you enjoy more!
Thanks for taking the time to share your thoughts with us.
Best regards,
True Nutrition Customer Service - MRMichael R.Verified BuyerRated 5 out of 5 stars1 week agoGrass-Fed Beef Protein Isolate
Great clean protein option with a mild taste and easy mixing. I like that it’s grass-fed, fat-free, and has no added sugar. A good alternative when I want to switch things up.
- BSBrittany S.Verified BuyerRated 3 out of 5 stars1 week agoNot for me
Maybe it’s just me, but no matter what ingredients I add, I always taste plastic fruity pebbles. It is manageable and I will eventually get thru all 8lbs but I don’t like the taste at all.
TNTrue Nutrition25 seconds agoHi Brittany,
Thank you for taking the time to share your feedback. We appreciate you giving our Grass-Fed Beef Protein Isolate a try and letting us know about your experience.
We're sorry to hear that the taste wasn't what you were looking for, and that you're picking up flavors that aren't working for you no matter what you mix it with. We understand that taste is really personal, and it's clear this one didn't meet your expectations.
Your honest feedback is valuable to us as we continue to work on improving our products. We appreciate you sticking with it, and we're sorry this particular flavor didn't turn out to be a good fit for you.
- SASara A.Verified BuyerRated 5 out of 5 stars1 week agoLove this protein!
I bought the unflavored, Cacao with monkfruit, and Vanilla with monkfruit. The unflavored has a beef flavor to it, so I wouldn’t use it again for a smoothie, but it would work well in food like soups or really anything hot with a gravy or sauce. I really love the Cacao flavor. It is sweetened perfectly. I prefer it hot. I can drink it with just water or add some coconut milk to make it more creamy. I haven’t tasted the vanilla yet but I’m going to venture to say it’s best hot as well. Because there is SO much protein per serving, the beef tends to come across more when it’s cold. I don’t notice it at all when it’s hot. And I’m sure it doesn’t come across at all with coffee.
- BSBrittnie S.Verified BuyerRated 5 out of 5 stars2 weeks agoGreat product
Love the clean ingredients and amount of protein. And at a great price. I always got the unflavoured to mix in my coffee, look forward to it every morning.