Vitamin O = sodium chloride (salt), water, with an electrical current passed through it. Sold to people as a miracle treatment.
The only thing this supposed supplement is good for, is parting fools from their money. Its even more ingenious than selling paper pulp bleach as a cure all. All you need to produce this miracle is sea water and a source of electrical current. Put these very cheap ingredients in a bottle, and sell it for 1000's of times what the actual cost is. What a scam!