@stevegrinstead, I don't have Superficial siderosis however in my quest for answers to an entirely different health issue I recalled flavinoids for iron overload from transfusions. I don't know if you have already investigated flavonoids so I present them for you to determine their appropriateness with Superficial siderosis. The frontiersin links offer information on a variety of flavinoids whereas biomedcentral focuses on quercetin. All flavonoids including quercetin have low absorption and benefit from enhansed absorption. For example, utilizing liposomal delivery overcomes many absorption barriers. Keep this in mind as you review the material. Always consult your health care provider before using any supplement.

https://www.frontiersin.org/articles/10.3389/fcell.2021.685364/full
https://jnanobiotechnology.biomedcentral.com/articles/10.1186/s12951-021-01059-0

thanks for the explanation. Prayers for you🙏🏻