Letters from the December 17, 2005, issue of Science News
By Science News
C plus
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 “Vitamin C may treat cancer after all” (SN: 10/15/05, p. 253), 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.