Inside Every Product

You'll see brands marketing collagen by type as if more types mean more benefits. It doesn't. Type is simply a reflection of the source. Chicken sternum gives you Type II. Bovine hide gives you Type I and III. Marine gives you Type I, the most abundant collagen in the human body, accounting for over 90% of your body's total collagen.

What actually matters is source, purity, and bioavailability. TruMarine® is Premium Select Grade Type I marine collagen, wild-caught, single source, and clinically proven to deliver 1.5x greater bioavailability than other leading brands. Chosen for purity and potency, not categorized for marketing purposes.

Type is a category. Source is everything.

Learn more about why source matters HERE

Visibly firmer, more hydrated skin. Stronger hair and nails. Reduced joint pain and improved mobility. Better bone density over time. And because TruMarine® has 1.5x greater bioavailability than other leading brands, your body actually absorbs and uses what you're taking.

Learn more here.

Not all collagen is created equal.

When it comes to collagen, the source matters. withinUs® TruMarine® Collagen is derived exclusively from the scales of wild-caught fish, a sustainable and premium source. Collagen peptides from wild-caught fish scales are clinically shown to be among the purest and most bioavailable forms available. This means TruMarine® Collagen is absorbed more efficiently into the bloodstream, allowing for a lower daily serving while still delivering superior results.

If you've tried a different collagen brand before and didn't notice a difference, source and absorption are likely why.

TruMarine® is wild-caught from the deep, clean waters of the South Pacific, sustainably sourced, and ultra-pure, with a low molecular weight that allows your body to absorb and use significantly more than any bovine, porcine, or avian source.

Not all marine collagen is equal either. TruMarine® is the only Premium Select Grade marine collagen in North America, clinically proven to deliver 1.5x greater bioavailability than other leading brands. That difference shows up in your serving size. TruMarine® delivers results at just 5 grams daily. Many bovine collagens require 10 to 20 grams to achieve a comparable effect, and pills or gummies absorb even less.

You'll also see multi-collagen products marketing a blend of types as a benefit. Combining collagen from multiple animal sources doesn't multiply the benefits; it dilutes the purity. You have no way of knowing the quality of each source, how they interact, or what you're actually absorbing. A single, ultra-pure source at the right dose will always outperform a cocktail of mixed animal origins.

Collagen sourced from land animals comes from skin and bones, which absorb contaminants and impurities from the animals' environment and food supply. Those impurities affect the final product, which is why so many bovine and porcine collagens have an unpleasant odour or taste and need to be flavoured or sold in capsule form to mask it.

TruMarine is virtually tasteless and odourless and dissolves completely. That's a reflection of purity.

withinUs TruMarine® Collagen is verified, tested, and transparent at every step.

Every lot produces a Certificate of Analysis, meaning every batch is tested and documented before it ever reaches you. It is manufactured in Canada under strict Good Manufacturing Practices, in a sterile facility free of gluten, nuts, soy, and common allergens.

Wild-caught and sustainably sourced. Third-party tested. Non-GMO Project Verified. Kosher certified. Health Canada NPN licensed.

withinUs is B Corp certified at the brand level, meaning our commitment to quality, people, and the environment is independently verified.

Testing is not something we do to check a box. It is how we have operated since day one, and it is not something we will ever compromise on.

TruMarine® is the only marine collagen of its kind available in North America. Sourced exclusively from wild-caught fish in the deep, clean waters of the South Pacific, not farmed, not from fish skin, and not all marine collagen is sourced this way. Ultra-pure, Premium Select Grade, and clinically proven to deliver 1.5x greater bioavailability than other leading brands, meaning your body absorbs and uses significantly more of what you take.

The result is a clean, highly bioavailable collagen that supports skin health, hair, nails, joints, and bone density over time.