The Best Grass-Fed Bovine Collagen Peptides
The best grass-fed bovine collagen is Vital Proteins Collagen Peptides, at $0.55 per 10 g, the lowest cost here. Vital Proteins says it comes from grass-fed, pasture-raised cows. It is plain collagen, 20 g a serving, and NSF checks it on two lists, including one for heavy metals.
By Erin Rose Updated October 31, 2026 How we score
Our pick for: Most people
- Collagen
- 20 g a serving2 scoops (4 tbsp); nothing else added
- Per 10 g of collagen
- $0.55The lowest here, at Amazon prices
- A tub
- $30.85Unflavored, 19.3 oz, 28 servings
- Testing lists
- NSF Certified for Sport and NSF/ANSI 173NSF lists all lots
- Source
- Grass-fed cowsThe brand's own claim
Why we pick it It is the only grass-fed collagen here on two NSF lists. NSF/ANSI 173 checks the label and contaminants such as heavy metals. NSF Certified for Sport adds a screen for drugs banned in sport, and it lists the unflavored tub Amazon sells for all lots.
What you give up A serving is 2 scoops. No outside standard backs the grass-fed claim, for this or any brand here.
The best grass-fed collagen for your needs
Vital Proteins suits most people. If one of these matters more to you, buy the one made for it. Each one is on a testing list.
Want a smaller serving: Sports Research
Sports Research gives 11 g of grass-fed collagen in one scoop, about half of Vital Proteins' serving. It is on Informed Choice, which screens for banned drugs. It costs about 33% more than Vital Proteins per 10 g.
Sports Research
$0.73 per 10 g · $32.95 a tub (Unflavored, 16 oz) · 11 g a scoop
Want collagen with Fortigel: Momentous
Momentous mixes grass-fed collagen peptides with 5.2 g of Fortigel, a branded collagen peptide that Momentous says supports tendons and ligaments, plus vitamin C. A scoop is 16.8 g of collagen in all. It is on NSF Certified for Sport, and it costs about 87% more than Vital Proteins per 10 g.
Momentous
$1.03 per 10 g · $51.99 a tub (30 scoops) · 16.8 g a scoop
What "grass-fed" means on a collagen tub
There is no U.S. government rule for "grass-fed" on a supplement label. The USDA withdrew its grass-fed standard, which was written for meat, in 2016. So the claim means what each brand says it means. Of the 4 brands here, none names an outside grass-fed program. Our best collagen overall pick makes no grass-fed claim at all, which is why it is not on this page.
How to choose grass-fed collagen
Buy one on a testing list for the tub you get
A grass-fed claim tells you about the cows, not what is in the tub. A testing list checks the tub. NSF/ANSI 173 checks the label and contaminants such as heavy metals. NSF Certified for Sport and Informed Choice also screen for drugs banned in sport. See which collagen is third-party tested.
Pick plain collagen peptides
Plain hydrolyzed collagen mixes into coffee or water with no taste. Added flavors, sweeteners or vitamins cost more and change the dose.
Compare the cost of 10 g of collagen
Scoops range from 11 to 22 g, so compare cost per gram. The table does the math.
4 grass-fed collagen powders compared
Cheapest per 10 g of collagen first, at Amazon prices checked November 6, 2026. Amazon prices change, so the order can too.
| Powder | Cost per 10 g | Why it is or is not the pick |
|---|---|---|
| Vital Proteins20 g a serving · Collagen only · NSF Certified for Sport and NSF/ANSI 173 | $0.55 | Our pick: two NSF lists, lowest cost |
| Sports Research11 g a serving · Collagen only · Informed Choice | $0.73 | Smaller scoop; costs more per gram |
| Transparent Labs22 g a serving · Collagen only · Informed Choice | $0.76 | Biggest scoop; costs more per gram |
| Momentous16.8 g a serving · Adds Fortigel and vitamin C · NSF Certified for Sport | $1.03 | Adds Fortigel and vitamin C; costs the most |
The proof for our pick
Here is the NSF listing behind the pick, as we saw it.
The NSF Certified for Sport listing
Questions people ask
Is grass-fed collagen better than regular collagen?
We found no study that compares them. Grass-fed is about how the cows are raised, and that is the main reason to buy it.
How much collagen should I take a day?
Our collagen dosage guide covers the trials, which mostly used 2.5 to 15 g a day. One serving of any powder here is in that range.
How we picked
We looked for bovine collagen powders sold on Amazon whose label says grass-fed. We searched 4 testing lists for each of the 4 products here. We ranked on three things, in this order: a testing list for the tub, nothing added, and the cost of 10 g of collagen. Don't eat beef? See the best marine collagen. Or see the collagen guide.
Sources
- Amazon listings and grass-fed claims for Vital Proteins, Sports Research, Transparent Labs and Momentous collagen, read October 31, 2026.
- NSF Certified for Sport listing for Vital Proteins Collagen Peptides, unflavored, read October 31, 2026: listing 1792557. NSF/ANSI 173: Vital Proteins Collagen Peptides.
- Other testing lists: Informed Choice (Sports Research Collagen Peptides Powder, Transparent Labs Grass-Fed Collagen Hydrolysate), read October 31, 2026; NSF Certified for Sport (Momentous).
- Momentous Collagen Peptides label, NIH Dietary Supplement Label Database 321456: 11.6 g collagen peptides, 5.2 g Fortigel, 50 mg vitamin C a scoop.
- USDA Agricultural Marketing Service, Withdrawal of United States Standards for Livestock and Meat Marketing Claims, Federal Register 81(7):1386, January 12, 2016.