Not sure what alternative medicine means in this context or why you trust such treatments based on anecdotal evidence over treatments subjected to clinical trials.
No reasonable person in the field refers these treatments as "alternative medicine." It's now is referred to, and has been for years, as "complementary medicine."
The medical people who founded the "Orthomolecular Medical Society" (not sure of exact name as it has gone through a number of iterations.) was founded under the leadership of Linus Pauling in 1968.