Legion Casein+ Micellar Casein, Dutch Chocolate Review
#5 of 8 · Best grass-fed✓ Label verified · Supplement Facts read Sep 7, 2026Real retailer photo, cut out. Label unedited.
Consider it. The grass-fed, stevia-sweetened casein — clean flavored label, 26 g, but no third-party seal. 26 g of grass-fed micellar casein, stevia-sweetened with no artificial dyes, sweeteners or fillers, and a fully-disclosed label from a transparency-focused brand.
$45$1.50 / serving
Why It Scores 8.3 — And The Label Line Behind Each Number
Form & purity (micellar)
30% of scoreIt's micellar casein — the slow-release form — from Truly Grass-Fed dairy, with a clean surrounding formula: stevia, natural flavors, no artificial sweeteners, dyes or fillers. That naturally-sweetened, fully-disclosed micellar formula is exactly what this axis rewards. It sits mid-pack rather than at the very top mainly because the standout single-ingredient and 100%-micellar picks edge it on pure form, but there's nothing to fault in the ingredient list.
- Form
- Micellar casein (slow-release, Truly Grass-Fed dairy)
- Sweetener
- Stevia + natural flavors; no artificial sweeteners, dyes or fillers
- Allergens
- Contains milk (not lactose-free)
Protein per serving & macros
25% of score26 g of protein per serving — among the higher doses in this lineup — with low carbs and no added sugar, a lean night-friendly macro. The strong protein-by-serving figure is a real plus. It scores solidly rather than top here largely because per-serving calories/BCAA detail is less fully specified on the listing than the leaders, but the headline 26 g is excellent for the overnight slot.
- Protein
- 26 g per serving
Third-party testing
20% of scoreThe honest read: Legion is a transparency-focused brand that publishes lab tests and fully discloses its formula, which supports a high score — but it carries no Informed Sport or NSF banned-substance seal. Brand-run lab testing is a manufacturer signal, not an independent banned-substance certification, and we won't frame it as one. If you specifically need a certified tub, the Informed Sport picks (Ascent, NOW) or the NSF pick (Naked) are the verified choices.
- Third-party testing
- None stated (brand cites its own lab testing; no Informed Sport/NSF seal)
Value per serving
15% of scoreThis is the weak axis: at about $45 a tub and roughly $1.50 per serving, it's a premium pour with fewer servings than the value leaders. You're paying for grass-fed sourcing, natural sweetening and full label disclosure — real costs — but on pure price per gram of protein it can't match Dymatize or the unflavored bulk bags, which is why it lands near the bottom on value.
- Value
- ~$45 / tub ≈ $1.50 per serving
Taste & mixability
10% of scoreDutch Chocolate is a well-regarded flavor and mixes reasonably for a casein, helped by the natural-sweetener formula that avoids a chemical aftertaste for people who dislike sucralose. Like all stevia-forward products the taste is a preference, and it's still casein-thick, so it scores solidly without topping the instantized mainstream picks.
- More Specs
- Carbs / sugar
- Low carb, no added sugar
Label verified. Every figure read from the Supplement Facts photo, Sep 7, 2026.
Marketing Claims Vs. Reality
Grass-fed micellar casein (Truly Grass-Fed dairy).
The grass-fed sourcing is a disclosed brand claim tied to a named supplier (Truly Grass-Fed), which is more specific than a generic 'grass-fed' label. It's plausible and transparent, but it's a sourcing claim from the manufacturer rather than an independently audited certification on the listing.
Naturally sweetened — no artificial sweeteners, dyes or fillers.
The label confirms stevia and natural flavors with no artificial sweeteners, dyes or fillers — a genuinely clean, verifiable ingredient list.
26 g of protein per serving.
The listing states 26 g protein per serving — one of the higher doses in this lineup, confirmed on the label.
Third-party / lab tested for purity.
Legion does publish lab analyses and is transparency-focused, so the testing claim isn't empty — but it's brand-commissioned lab testing, not an independent Informed Sport or NSF banned-substance certification. Per source-provenance honesty, that's a manufacturer signal, not the third-party seal the certified picks carry.
Fully transparent, fully-disclosed label.
Legion discloses its complete formula and ingredient amounts, consistent with its transparency positioning — a verifiable practice and a genuine differentiator from proprietary-blend products.
What Our Test Actually Found
The grass-fed, naturally-sweetened flavored casein
Legion fills a specific niche: you want grass-fed sourcing and no artificial sweeteners, but you don't want to go fully unflavored. It delivers 26 g of Truly Grass-Fed micellar casein, stevia-sweetened, no artificial dyes or fillers, with a fully-disclosed label. If that combination is your priority, it's the strongest flavored option for it in the lineup.
One of the higher protein doses here
At 26 g per serving it ties for the top of the protein-per-serving range in this roundup, edging the 24-25 g picks. For a pre-bed scoop where you want protein without a big calorie load, a higher-protein, low-added-sugar serving is a genuine plus — and the natural-sweetener formula keeps the macro clean.
The certification gap is the honest limitation
Legion is transparency-focused and publishes its own lab tests, but it carries no Informed Sport or NSF seal. Brand-run testing is a real signal, but it isn't independent banned-substance certification, and we won't dress it up as one. If you're a tested athlete or you specifically want a third-party seal, Ascent (#3) or NOW (#4) — both Informed Sport — are the verified choices.
You pay a premium for the sourcing story
At roughly $1.50 a serving with fewer servings per tub, it's a premium buy, and value is its weakest axis. That's consistent with quality-over-price: it earns its spot on sourcing and clean formulation, not on cost, and it deliberately isn't ranked above better-value tubs just for being grass-fed. If grass-fed isn't a must for you, Dymatize (#1) delivers the pure form for far less.
Full analysis: all pros & cons (6), buy if / skip if
- 26 g of micellar casein — among the higher doses here — from grass-fed dairy
- Naturally sweetened with stevia; no artificial dyes, sweeteners or fillers
- Fully-disclosed label from a transparency-focused brand
- Ready flavored chocolate for those who want grass-fed sourcing without going unflavored
- Premium price (~$1.50/serving) and fewer servings per tub than the value picks
- No Informed Sport / NSF certification — brand lab testing is not an independent seal; contains milk
- You want grass-fed dairy and natural (stevia) sweetening in a flavored casein
- You like one of the higher protein doses here (26 g) with a fully-disclosed label
- You prefer a ready chocolate flavor over an unflavored bag
- You need a banned-substance certification — go Ascent (#3) or NOW (#4), both Informed Sport
- You want the best value per gram — Dymatize (#1) and the bulk bags are cheaper
26 g of grass-fed micellar casein, stevia-sweetened with no artificial dyes, sweeteners or fillers, and a fully-disclosed label from a transparency-focused brand. The catches: premium price (~$1.50/serving), fewer servings per tub, and no Informed Sport/NSF certification — the brand's own lab testing is a manufacturer claim, not an independent seal. Best for buyers who prioritize grass-fed sourcing and natural sweetening in a flavored powder.
Legion Casein+ is the grass-fed, naturally-sweetened option for someone who wants a clean premium label without going fully unflavored. It serves up 26 g of micellar casein — one of the higher per-serving doses in this lineup — from Truly Grass-Fed dairy, sweetened with stevia and free of artificial dyes, sweeteners and fillers, with the kind of fully-disclosed label Legion is known for. The downsides are price-related: it costs more per serving and gives you fewer servings per tub than the value leaders, and unlike the Ascent and NOW picks it doesn't carry an Informed Sport or NSF seal. The brand cites its own lab testing, but that's a manufacturer signal, not an independent certification. If grass-fed sourcing and natural sweetening in a flavored casein are what you're after, it's a strong choice.
The grass-fed, naturally-sweetened flavored casein — strong for that niche, premium on price.
Legion Casein+ is the pick for someone who wants a clean premium label but doesn't want to go fully unflavored. It serves 26 g of micellar casein — one of the higher doses here — from grass-fed dairy, sweetened with stevia and free of artificial dyes and fillers, with the fully-disclosed label Legion is known for. The downsides are price-related: it costs more per serving and gives fewer servings per tub than the value leaders, and unlike Ascent and NOW it carries no Informed Sport or NSF seal — the brand's own lab testing is a manufacturer signal, not an independent certification. If you need a certified tub, go Ascent (#3); if you want the pure form at better value, Dymatize (#1). But if grass-fed sourcing and natural sweetening in a flavored casein are what you're after, this earns its place. (Dairy protein — low lactose, not lactose-free.)
If This Doesn’t Fit — Try These
03Ascent Native Fuel Casein
Ascent Native Fuel is the pick for anyone who wants a casein that's both clean and genuinely tested.
07ProMix Grass-Fed Casein
ProMix Casein is the premium grass-fed pick for purists who want sourcing AND a clean label.
01Dymatize Elite Casein
Dymatize Elite Casein is the best all-round pick because it nails the things that actually matter for casein: it's 100% micellar (the genuinely slow-digesting form), it's dosed at a full 25 g of protein for only about 130 calories, and at 50 servings a tub it's one of the better values here — all wrapped in a chocolate that's repeatedly rated among the smoothest-mixing caseins, which is no small thing for a notoriously thick protein.
Quick Answers
Does grass-fed casein build more muscle?
No. Grass-fed sourcing is a quality and values choice — many buyers prefer it for animal welfare or a slightly different fatty-acid profile — but it doesn't change the muscle outcome. What drives growth is your total daily protein (Morton 2018), and casein's job is slow release for the overnight gap. Buy Legion because you want grass-fed dairy and natural sweetening, not because you expect extra gains from it.
Is Legion's lab testing the same as Informed Sport certification?
No, and it's worth being precise. Legion publishes its own lab analyses and fully discloses its formula, which is more transparency than most brands offer — but that's manufacturer-commissioned testing, not an independent banned-substance certification like Informed Sport or NSF. If you're drug-tested or you specifically want a third-party seal, choose Ascent (#3) or NOW (#4), which carry Informed Sport.
Why does it cost more than the mainstream picks?
You're paying for grass-fed sourcing, natural (stevia) sweetening, no artificial dyes or fillers, and a fully-disclosed label — all of which raise cost. At about $1.50 a serving with fewer servings per tub, it's a premium buy, which is why value is its weakest axis. If those attributes matter to you it's fair value; if not, Dymatize (#1) delivers the pure micellar form for considerably less.
Sources & Further Reading
2 peer-reviewed sources, each linked to PubMed
- [1] Res 2012 PMID 22330017 — Protein ingestion before sleep improves postexercise overnight recovery. Casein taken before sleep raised overnight muscle protein synthesis versus placebo — supporting a 26 g grass-fed micellar scoop like Legion's for the overnight window.
- [2] Morton 2018 PMID 28698222 — A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults. Training gains tracked total protein (~1.6 g/kg/day) with no clear source advantage — context for the fact that grass-fed sourcing is a quality/values choice, not a muscle-growth upgrade.
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