Lutein

https://faseb.onlinelibrary.wiley.com/doi/abs/10.1096/fasebj.24.1_supplement.92.4

https://faseb.onlinelibrary.wiley.com/doi/abs/10.1096/fasebj.21.5.A156-d

http://article.foodnutritionresearch.com/pdf/jfnr-5-6-2.pdf

https://pubmed.ncbi.nlm.nih.gov/23128450/

https://academic.oup.com/jn/article/147/3/323/4669740

https://pubmed.ncbi.nlm.nih.gov/26762372/

silymarin https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4866124/

MSM Needs more study but is interesting nonetheless https://www.mdpi.com/2072-6643/13/10/3620