Collagen Peptides: A Complete Guide to Types, Sources, and Wellness Benefits

Collagen is the most abundant structural protein in the human body and a primary building block of skin, tendons, ligaments, cartilage, bones, and connective tissue. It gives structure and resilience to tissues throughout the body. As part of the natural aging process, the body's own collagen production gradually changes, which is why many people choose to add collagen peptides to a daily wellness routine.

Collagen supplements are typically derived from sources such as bovine (beef), marine (fish), and chicken. These sources are hydrolyzed—broken down into small peptides—so that the powder dissolves easily and mixes into water, coffee, or smoothies. The most common collagen types used in supplements are Type I, Type II, and Type III. Type I is the most abundant and is found in skin, bone, and tendon. Type II is found in cartilage and is often used in joint wellness formulas. Type III is found in skin, muscle, and blood vessels and is frequently paired with Type I.

Many people supplement with collagen to support skin hydration and elasticity as part of a healthy routine, to support healthy hair and nails, and to support joint comfort and mobility during training and active lifestyles. Research published in journals such as Skin Pharmacology and Physiology, the British Journal of Nutrition, and the International Journal of Dermatology has examined collagen peptides for skin, joint, and muscle wellness. Study designs, doses, and results vary, and individual results vary as well.

When choosing a collagen product, factors such as source quality, peptide profile, purity, taste, and formulation matter. At Collagen.com.AI, our research and development team—led by AI longevity researcher John D Abravanel Berdugo of U.S. Longevity Laboratories, Inc.—focuses on these quality factors across bovine, marine, and custom collagen formats. We also offer white label collagen development so clinics, med spas, gyms, influencers, and ecommerce brands can launch their own collagen products.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Content is informational and is not medical advice. Consult a licensed healthcare provider before using any supplement, especially if pregnant, nursing, taking medication, or managing a health condition.