Protein powder compared by type
9 protein powders across whey isolate, whey concentrate, plant and collagen, each priced per 25 g of protein rather than per scoop, with the testing on record and leucine where the label prints it.
Prices checked Oct 25, 2026 9 products Protein: the evidence
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Not a ranking and not a recommendation. Ask your clinician or dietitian how much protein you need, especially with kidney disease.
By type
Prices are one-time prices at the size shown, per 25 g of protein as each label prints it.
Protein powder by type
Checked Oct 25, 2026| Type | Product | Protein per serving | Testing | Per 25 g | Source |
|---|---|---|---|---|---|
| Whey isolate | Transparent Labs Grass-Fed Whey Protein Isolate (French Vanilla)2 lb | 28 g in 1 scoop (34.3 g)Leucine not printed | Informed Choice and Informed Protein | $1.93 per 25 g$64.99 for 30 servings · checked Oct 25, 2026 | Read on transparentlabs.com |
| Whey isolate | Momentous Whey Protein Isolate (unflavored)25-serving jar (590 g) | 20 g in 1 scoop (23.7 g)Leucine 2.467 g a serving (3.1 g per 25 g of protein) | NSF Certified for Sport | $3.50 per 25 g$69.99 for 25 servings · checked Oct 25, 2026 | Read on livemomentous.com (paid link, opens in new tab) Paid link |
| Whey concentrate | Promix Unflavored Whey Protein Powder1 bag (37 servings) | 25 g in 2 scoops (31 g)Leucine not printed | None stated | $1.73 per 25 g$64.00 for 37 servings · checked Oct 25, 2026 | Read on promixnutrition.com |
| Whey concentrate | Naked Nutrition Naked Whey (unflavored)2 lb (907 g) | 25 g in 30 g (about 2 scoops)Leucine 2.982 g a serving (3 g per 25 g of protein) | NSF Contents Certified | $2.10 per 25 g$62.99 for 30 servings · checked Oct 25, 2026 | Read on nakednutrition.com |
| Plant (pea or pea blend) | Naked Nutrition Naked Pea (unflavored)2 lb (907 g) | 27 g in 30 g (about 2 scoops)Leucine 2.523 g a serving (2.3 g per 25 g of protein) | NSF Contents Certified | $1.08 per 25 g$34.99 for 30 servings · checked Oct 25, 2026 | Read on nakednutrition.com |
| Plant (pea or pea blend) | Orgain Organic Protein Plant Based (Vanilla Bean)2.03 lb canister | 21 g in 2 scoops (46 g)Leucine not printed | None stated | $2.26 per 25 g$37.99 for 20 servings · checked Oct 25, 2026 | Read on orgain.com |
| Plant (pea or pea blend) | Momentous 100% Plant Protein (vanilla)22-serving jar | 20 g in 1 scoop (31.7 g)Leucine not printed | NSF Certified for Sport | $2.84 per 25 g$49.99 for 22 servings · checked Oct 25, 2026 | Read on livemomentous.com (paid link, opens in new tab) Paid link |
| Collagen peptides | Great Lakes Wellness Collagen Peptides (unflavored)16 oz (22 servings) | 18 g in 2 scoops (20 g)Leucine not printed | None stated | $2.05 per 25 g$32.49 for 22 servings · checked Oct 25, 2026 | Read on greatlakeswellness.com |
| Collagen peptides | Vital Proteins Collagen Peptides (unflavored)19.3 oz | 18 g in 4 tbsp (20 g)Leucine not printed | None stated | $2.23 per 25 g$45.00 for 28 servings · checked Oct 25, 2026 | Read on vitalproteins.com |
How we chose
The rule
Applied to our protein price index- Products chosen to cover each type (whey isolate, whey concentrate, plant, collagen peptides), with most from brands that do not pay us. Every product in the index is shown, so nothing is picked; within a type, lowest price per 25 g first.
- Each product was read on its brand’s own page on the date shown: protein per serving and servings as the label prints them, the one-time price for one size, leucine only where the label prints it, and a certification only where the page states it for that product.
- Who pays us does not change what is listed or the order. Every row’s link looks the same; a link that pays us is marked “Paid link”.
Not all protein is equal
What our protein pages record
The trials they cite- Collagen. 35 g of collagen peptides supplied 1.0 g leucine versus 3.0 g in 35 g whey; whey increased muscle thickness more, even when leucine was matched.
- Pea and whey. No difference between pea and whey in the 12-week training trial or in older men's muscle protein synthesis; whey lowered muscle damage markers more in two trials.
- Amounts. Servings of about 19–40 g protein in trials; gains plateaued at total protein intakes near 1.6 g/kg/day.
- Daily intake. RDA 0.8 g/kg/day for healthy adults; ODS cites 1.2–2.0 g/kg/day for athletes. No UL has been set.
Sources are on the whey, pea protein and collagen pages.
These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.
Questions
Common questions
Which protein powder is best?
This page does not pick one. It prices every powder in our index the same way, per 25 g of protein, so a bigger scoop or a cheaper tub does not hide the real cost. What each type has been studied for is on our whey, pea protein and collagen pages.
Why price per 25 g of protein instead of per scoop?
Scoops here hold 18 to 28 g of protein, so price per scoop is not comparable. Per 25 g, whey isolate runs $1.93 to $3.50, whey concentrate $1.73 to $2.10 and plant $1.08 to $2.84.
Does collagen count toward a protein target?
It is protein, but not equal protein for muscle. Our collagen page records: 35 g of collagen peptides supplied 1.0 g leucine versus 3.0 g in 35 g whey; whey increased muscle thickness more, even when leucine was matched.
Does Kymata earn money from these links?
When the brand is an active partner, yes: its link is marked "Paid link" and pays us a commission. Most products here are from brands that do not pay us; every row’s link looks the same, and the order (by type, then price per 25 g) does not change with who pays us.