The global collagen supplements market size was valued at USD 5.40 billion in 2024 and is projected to grow from USD 5.68 billion in 2025 to USD 8.51 billion in 2033, exhibiting a CAGR of 5.2% during the forecast period (2025-2033). Collagen is an essential protein in the skin, bones, muscles, and connective tissues. Collagen maintains the structure of the body.