Ewan Cameron, who in 1971 began to collaborate with Linus Pauling on vitamin C and cancer, typically initiated patients with 10 grams per day of vitamin C given intravenously for about 2 weeks, followed by an oral dosage continued indefinitely. The two Mayo Clinic trials referred to in this article, which failed to show any benefit for vitamin C in cancer patients, used only oral doses with limited absorption. The new study by Mark Levine adds to the growing consensus that intravenous vitamin C is worthy of a clinical trial.

Stephen Lawson
Linus Pauling Institute
Oregon State University
Corvallis, Ore