In this 2018 systematic review 10 articles (preclinical) were included in the final analysis. These studies demonstrated that vitamin C increases type 1 collagen fibres, scar tissue formation and accelerates bone healing after fracture.
References:
DePhillipo, N. N., Aman, Z. S., Kennedy, M. I., Begley, J. P., Moatshe, G., & LaPrade, R. F. (2018). Efficacy of Vitamin C Supplementation on Collagen Synthesis and Oxidative Stress After Musculoskeletal Injuries: A Systematic Review. Orthopaedic journal of sports medicine, 6(10), 2325967118804544. https://doi.org/10.1177/2325967118804544
