According to the Linus Pauling Institute at Oregon State University, the recommended daily allowance for vitamin C is 75 mg per day for adult females and 90 mg for adult males; however, smokers need a slightly higher daily dosage.
His research into the use of vitamins as therapeutic agents continues at the Linus Pauling Institute in Oregon which studies many vitamins, including vitamin C, vitamin mega doses and their potential to improve human health.
The Linus Pauling Institute at Oregon State University notes this is still an emerging area of research, but it may be worthwhile to discuss a sub-lingual vitamin B12 supplement with your doctor or pharmacist.
Although evidence was mounting that high doses of vitamin C did not help cancer patients, Pauling vigorously denied other researchers' work and insisted that his original findings were correct.
Pauling was already interested in vitamin therapy after his own successful treatment of Bright's disease and other books he'd read previously about the use of niacin as a therapeutic agent.