The Complete Guide to Collagen Supplements: Types, Benefits, and How to Choose the Right One

Collagen is the most abundant protein in the human body. It's the structural glue that holds your skin, joints, tendons, bones, and gut lining together. And starting in your mid-20s, your body's ability to produce it naturally begins to decline.

That's why collagen supplements have exploded in popularity — and why navigating the market can feel overwhelming. This guide covers everything you need to know to make a smart choice.

What Is Collagen, Really?

Collagen is a fibrous protein made up of amino acids — primarily glycine, proline, and hydroxyproline. It forms a triple-helix structure that gives tissues their strength and elasticity. There are actually 28 known types of collagen, but most supplements focus on just a few:

Type I Collagen

The most abundant type in the human body. Found in skin, tendons, bones, and connective tissue. This is the form most associated with skin elasticity and anti-aging benefits. Bovine (cow) and marine (fish) collagen are the most common sources.

Type II Collagen

Primarily found in cartilage. This type is the focus for joint health and is usually sourced from chicken sternum. If knee pain, arthritis, or joint recovery is your goal, Type II is what you want.

Type III Collagen

Often found alongside Type I in skin and blood vessels. It plays a role in gut health and skin structure and is common in bovine-sourced collagen products.

Benefits Backed by Research

Skin elasticity and hydration: Multiple studies show oral collagen supplementation can improve skin elasticity, hydration, and reduce the appearance of wrinkles after 8–12 weeks of consistent use. A 2019 systematic review in the Journal of Drugs in Dermatology confirmed these findings across multiple trials.

Joint pain reduction: Type II collagen has shown promise for reducing joint pain and stiffness, particularly in people with osteoarthritis. Some research suggests it may help the immune system develop tolerance to cartilage proteins, reducing inflammation.

Gut lining support: Glycine — a key amino acid in collagen — plays a role in maintaining gut barrier integrity. Many people use collagen as part of a gut-healing protocol, though direct clinical evidence here is still emerging.

Muscle recovery: Collagen combined with Vitamin C has been studied for its role in stimulating collagen synthesis in connective tissue after exercise, which may support recovery and tendon health.

Hydrolyzed Collagen vs. Gelatin vs. Raw Collagen

Hydrolyzed collagen (collagen peptides) is broken down into smaller peptides through enzymatic hydrolysis. This makes it water-soluble, easy to digest, and highly bioavailable. It's the most common and practical form for everyday use.

Gelatin is partially hydrolyzed collagen — great for cooking but less convenient as a supplement and slower to absorb.

Raw collagen (undenatured) is not processed and is used specifically for joint support, where the intact structure may trigger a specific immune response. This is most common with Type II collagen products.

What to Look For on the Label

• Source: Bovine (skin and bones) for Types I and III; Marine for Type I; Chicken for Type II
• Hydrolyzed/Peptide form: For maximum absorption
• No added fillers or artificial sweeteners — especially if you're mixing into hot drinks
• Vitamin C inclusion: Your body needs Vitamin C to synthesize collagen, so some products include it for good reason
• Third-party testing: Look for NSF, Informed Sport, or USP certification

How to Take Collagen for Best Results

Most research uses 10–15 grams per day. Collagen peptide powders blend easily into coffee, smoothies, or water. Consistency matters more than timing — you need to take it daily for at least 8 weeks before expecting to see visible skin or joint changes.

Pairing collagen with Vitamin C (either in the supplement or in your diet) is important for activation.

The Bottom Line

Collagen supplements aren't just hype — the research is genuinely encouraging, particularly for skin health and joint support. The key is choosing the right type for your goal, going with a hydrolyzed formula, and being consistent.

Whether you're 30 and looking to stay ahead of the curve, or 50 and trying to recover what time has taken, collagen is one of the better-supported supplements on the market today.

Explore our collagen collection to find the type and format that fits your health goals. Have questions? Our team is happy to help you choose.