BEAR BRAND

Vitamin C's role in building collagen isn't a marketing claim but basic biochemistry: it's the essential cofactor for the enzymes that stabilize collagen's triple-helix structure, and severe deficiency causes scurvy, with damage precisely in the tissues the ad names — bone, joints, skin (NCBI StatPearls; Merck Manual). A recent meta-analysis of 30 studies (World Journal, 2026) confirms vitamin C measurably improves pain, function, and collagen-synthesis markers in musculoskeletal disorders, and a study published in Nature Communications (2022) shows it even regulates bone-gene expression through epigenetic mechanisms. That solid finding, though, stops at vitamin C itself: Harvard T.H. Chan School of Public Health's Nutrition Source explicitly notes "a lack of research to show that eating collagen can directly benefit skin or joint health" beyond its general nutritive role once digested into ordinary amino acids. For someone already well-nourished (fruits, vegetables), the daily drink likely adds little that diet doesn't already provide, except in cases of insufficient vitamin C intake. Verdict: mixed — the vitamin C/collagen mechanism is solid and well documented, the specific need for this commercial drink to get it is not.