This particular field is highly contraversial.
Treatments of orthomolecular medicine is generally
not available for the general public. And people
are generally no informed by their doctors about
options of orthomolecular medicinal treatments.
Cancer treatment with doses of vitamin C up to
200,000 mg (200 grams) per day in infusions
lasting 4-12 hours several times a week.
This would be generally easy and cheap to administer.
I think, the availability of such treatment would bring
healty people too for possible preventive reasons.
Do I need to mention growth hormon therapy on a seastead? Steastead on-board production of recombinant DNA
growth hormone, and administration of it. There are many biotech people who would know how to do that.