Marine collagen vs bovine collagen: what is the difference in price?
On what this site measures, cost per 10 g of collagen peptides as each label prints them, the cheapest bovine collagen we track is the cheaper of the two, at $0.379 against $0.49 for the cheapest marine, about 1.3×.
The argument usually made between these two is about absorption, the peptide sizes each source yields, and whether the collagen comes from cattle or from fish. We do not measure any of that, and this page does not settle it. What it can give you is the checkable part: what 10 g of collagen costs in each, how many products there are to choose from, and what the panels name. One label difference is worth knowing before you compare: a marine collagen is a fish product and says so, which matters if you avoid fish or shellfish. Powders only: BulkSupplements.com Marine Collagen (Fish) Capsules (300 capsules) is priced against its own format on the collagen page.
| Source | Cheapest per 10 g | Most expensive per 10 g | Products we price | Cheapest is |
|---|---|---|---|---|
| Bovine The label names a bovine source (cattle). | $0.379 | $2.12 | 23 | BulkSupplements.com Collagen Peptides Powder (Bovine), Unflavored (1 kg) buy |
| Marine The label names a marine or fish source. | $0.49 | $2.20 | 8 | BulkSupplements.com Marine Collagen (Fish) Powder, Unflavored (1 kg) buy |
Every figure is the cost of 10 g of collagen peptides as the product's own Supplement Facts panel prints them, not per scoop and not per tub, and not the protein line beside it. Every price is the package price before delivery.
Where to buy: the collagen peptides shortlist
The pick is the cheapest certified product, at the exact package sold where the certifier names packages, with no adverse finding on record, a price its retailer let us read recently, and no more than a year’s supply at the label’s serving; per delivered dose where the retailer publishes a delivery rate. Where none does, it is the cheapest such product before delivery, and it says how far the order is from free delivery. It is the same pick the category page shows. Any answer shown beside it is the cheapest under a different rule and says so on its own line; answers that cost more than the pick fold under one line until you ask for them.
How these lines are chosen
Among 44 products and 44 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.
A pick has to be independently certified, at the exact package sold where the certifier names packages, with no recall or failed test, a price its retailer let us read recently, and no more than a year’s supply at the label’s serving. Where the retailer publishes no delivery rate, the pick is priced before delivery and says so. Nothing we track here clears all of those yet. This one misses at least one bar, and says which:
Full comparison of every product in this category: Collagen Peptides. Every question we answer: the question index.
What this rests on: prices we last recorded at the retailer named on each product page, which go stale, and each page says when it was checked; the products we track, not every product sold, and Amazon and Walmart are not among the stores; listings and labels read at the source, each linked from the page. Found an error? Tell us. The full method: How we compare.