"I only spot injected calves and took DNP for a little while"... Wood-Healy Circa 2023
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From 1933 to 1938, it was sold over-the-counter to more than 100,000 people. However, in 1938, DNP was pulled from the market due to safety concerns as cases of poisoning, deaths, and other serious complications emerged.
The Federal Food, Drug, and Cosmetic Act of 1938, a new law that established higher quality standards for drug manufacturers, labeled DNP as “extremely dangerous and not fit for human consumption.”
A 2018 case report [Trusted Source] showed that DNP is currently used to make:
wood preservatives
dyes
explosives
pesticides