Mar. 31, 2025
Mention collagen 10 years ago and very few people would know what you’re talking about.
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Now, collagen is a household name.
Its popularity has increased exponentially in the last decade, with people—specifically women—flocking to it in hopes of reversing signs of aging (think: crepe-like skin, wrinkles, thinning hair, achy joints).
They’re not stopping, either. By , the collagen market is expected to be a 76.08 billion dollar industry (1).
In this article, we’ll reveal the seven most important things to look for when buying a collagen supplement—and most importantly—what to avoid.
Collagen is the most abundant protein in your body (it makes up about 30% of your total protein!).
Because of this, it’s often called the building block of your skin, muscles, bones, tendons, ligaments, and other connective tissues. It repairs several tissues in your body and plays a supportive role in skin health, bone mineral density, joint health, gut health, and more (2, 3, 4, 5).
Did you know that there are 28 distinct varieties of collagen (6)?
However, 90% of the collagen in your body is comprised of only Types 1, 2, and 3 (7).
Type 1 collagen is primarily found in your skin, bones, teeth, tendons, ligaments, vascular system, and organs. Type 2, although abundant, is found only in your cartilage (6). Type 3 is found in your skin, muscles, and blood vessels.
Supplementing with all three types of collagen seems best, but studies show that Type 2 inhibits the absorption of Type 1 and Type 3 (8). The ideal collagen supplement contains only Types 1 and 3 collagen.
Type 1 collagen positively impacts (9, 10, 5, 3, 11):
Type 3 collagen positively impacts (5, 12, 13):
Many companies market their collagen as “multi-collagen”, boasting that it contains several collagen types in one. Don’t be fooled: these added collagen fibers are filler fibers that take away the effectiveness of the more potent fibers like Type 1 and 3.
Collagen supplements can come from a variety of sources like bovine (cow), marine (fish), and even vegan options (yeast) (14). When it comes to bovine collagen, it’s essential that it’s grass-fed bovine.
Grass-fed cows are cows raised without antibiotics and hormones, and never fed genetically modified organisms (GMOs) (15).
Conventional beef is pumped with all kinds of chemicals like growth hormones (rBGH and rBST) and antibiotics that you shouldn’t be ingesting every day. 95% cows in the U.S. that are not 100% grass-fed are fed GMO corn (16).
To avoid these potential contaminants in your bovine collagen supplement, always look for “grass-fed” along with “non-GMO” on the label.
While there’s no set dosage for collagen, studies have confirmed that a 10 gram serving is ideal for your daily dose (17).
That said, there are several collagen supplements out there that offer a measly 2.5 or 5 grams of collagen per serving—barely enough to offer the transformational benefits that so many are after when taking collagen. (This is especially true for liquid collagen supplements.)
If you want to learn more, please visit our website hydrolyzed fish collagen manufacturers.
We recommend taking at least 10-20 grams of collagen peptides per day—and that’s if you’re just wanting to maintain collagen levels. If you’re 50 years old and just starting collagen, we recommend taking 40 grams of collagen for 8 weeks to replenish the collagen that you’ve lost over the years. And then lowering your daily dose back down to 20 grams.
Some research suggests that 2.5 to 5 grams is enough to notice changes in cellulite and skin elasticity, but not for more serious issues like sarcopenia (muscle loss due to aging), osteoporosis, or activity-related joint pain (18, 19, 20, 2).
Hydrolyzed collagen and collagen peptides both mean the same thing: that the collagen has gone through a process that breaks it down into smaller, ready-to-absorb amino acids that can easily be soaked up by your body. Put simply, collagen peptides require much less effort from your digestion and guarantees a more potent dose of collagen (6).
Non-hydrolyzed collagen, on the other hand, requires your digestive enzymes to work harder.
The easiest way to tell if a collagen powder is truly hydrolyzed is if it doesn’t clump when you add it to coffee, tea, or water.
The health benefits of collagen peptides have been known for centuries. In recent years, increasing evidence has been found for their support of skin and hair beauty, joint and bone health, and sports recovery. Today, collagen peptides produced from fish are becoming more and more popular. In this article, we explore where these marine collagen peptides come from, how they are produced, and what you need to consider, as a conscientious consumer, when choosing your product.
Marine collagen peptides are a health ingredient made from fish and used in a variety of health and beauty products. Like bovine, porcine and other fish collagens, these collagen peptides are produced from 100% natural animal sources – in this case, the skins of wild-caught ocean fish. Marine collagen peptides are becoming more and more popular, both among consumers and manufacturers in the health, beauty and nutraceuticals markets.
Marine collagen peptides can come from two different sources: wild-caught fish and aquaculture fish. Wild-caught fish are caught by fishermen in their natural environment, such as oceans, rivers and lakes. Aquaculture fish are sourced from farm-raised populations, such as cultivated fishery installations. Fish farmers can play a role in the rearing process to enhance production. Wild-caught and farm-raised sources are complementary. Balancing the two sources and treating them with equal respect can help us to feed the world.
Fish collagen peptides are so-called Type I collagen peptides. Type 1 collagen peptides are the most abundant collagen in the human body; Type I is the building block for beautiful skin, flexible connective tissues and strong bones. The production process behind fish collagen peptides is the same as it is for collagen peptides from any other source. It begins with a natural process of extracting gelatin from the raw material, which contains native collagen. This is followed by a specific enzymatic hydrolysis process to convert the gelatin into – highly bioavailable and bioactive – collagen peptides.
Watch video to learn more about the collagen peptides production process:
The health benefits of collagen and collagen peptides have been recognized for many generations. In recent years, more and more scientific evidence has emerged for their support of skin and hair beauty, joint and bone health. Recent research has also highlighted benefits for sports recovery.
A recently published paper[1] has expanded our understanding of how and why collagen peptides are so effective, by showing their bioavailability and bioactivity. This research paper demonstrates that the intake of this health ingredient leads to an increased level of hydroxyproline-carrying dipeptides in the blood. These dipeptides are described to carry bioactivity and have been proven to be responsible for health benefits.
As a conscientious consumer, you will want to look beyond safety and quality standards to the sustainability of your products as well. With regard to ocean fish products, it is important to ensure that the fishing practices behind these products are properly managed and sustainable. Sustainable fishing means the oceans’ fish population are maintained at healthy and productive levels, the environmental impact of fishing is minimized, the surrounding ecosystems are respected, and the people who depend on fishing can sustain their livelihoods. When looking for collagen peptides made from marine fish, you can certainly apply these same standards.
There are different non-governmental organizations (NGOs) in the world who sustainably govern and manage fishing practices, such as the Marine Stewardship Council (MSC), the Marine Conservation Alliance (MCA), Friend of the Sea (FOS) and others. To be certified by any of these organizations, fisheries and companies must comply with strict requirements regarding sustainability, and supply chain traceability (as part of the MSC Chain of Custody program).
The MSC is one of the most recognized labels for sustainable fishing practices and supply chain traceability in the world. This organization operates globally, and seafood products that carry its well-known blue label can be found in numerous countries, from the US and France to Japan and China. The MSC is an international, non-profit organization that wants future generations to be able to keep enjoying seafood and oceans full of life. Its mission is to use ecolabelling and fishery certification to contribute to the health of our world’s oceans by recognizing and rewarding sustainable fishing practices, influencing the choices people make when buying seafood, and working with partners to make the seafood market sustainable. The MSC’s key mission is to promote practices that maintain sustainable fish stocks, to reduce the environmental impact of fishing, and to make the management of fisheries more effective.
All of this means that marine collagen peptides supplied by fisheries that are MSC-certified are sustainable and well-managed. The entire supply chain behind these products – from fishery to factory – is audited by the MSC to ensure quality and transparency. So if you are looking for environmentally sustainable marine collagen peptides, look for suppliers that are MSC-certified.
There are many different collagen peptides on the market today, and not all collagen peptides are made in the same way or with the same care for the planet. At Rousselot, we want to be sure that our products are of premium quality, and that our products and processes positively impact the planet and society. We share the Marine Stewardship Council’s vision of oceans teeming with life for this and future generations and to protect not only fish populations, but also ocean habitats, coastal fishing communities, and economies. The fish we use for Peptan Marine are wild-caught and supplied exclusively by fisheries certified by the MSC.
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[1] Non-targeted and targeted analysis of collagen hydrolysates during the course of digestion and absorption.
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