​In the 1930s, rubber factory workers drank alcohol and suddenly felt sick. It wasn't just a workplace illness, it led to the discovery of Antabuse, helping millions quit drinking

Medical breakthroughs are commonly understood to be discovered following many experiments and studies performed in the laboratory settings. Nonetheless, in some cases, medical breakthroughs take place accidentally. In this regard, there is a well-known story about workers who produced rubber that happened in the 1930s.

The unusual thing was that these workers started developing certain symptoms when consuming alcohol. At first, this appeared to be just another case of an occupational disease. Still, scientists soon came to realize that their discovery could become an important contribution to the treatment of alcoholism.

An unusual tendency shown in rubber-producing plants


All of this was initially connected to the research of the rubber-producing plants that required using one chemical compound called tetraethylthiuram disulfide. According to the historical overview provided by National Academies Press, as it turned out, the use of this substance resulted in numerous health problems experienced by the people who drank alcohol.

Specifically, the symptoms included the nausea feeling, reddening of the face, headache, as well as vomiting. People did not know back then that this was the beginning of a unique medical discovery. However, in those days, they were not even considering how they might help cure individuals of alcoholism. At that point, their main aim was simply to find the reason why diseases existed among workers.

Chemical substance with a completely different use

Here, the role played by disulfiram cannot be associated with medicines in any way. Based on the information offered by Boris Cvek in his article entitled "The Promiscuity of Disulfiram in Medicinal Research" of 2023, it is possible to come to a conclusion that the chemical became well-known only because of being used extensively in industry for creating rubber products thanks to its properties that helped in speeding up the vulcanization process. Hence, it had no use in pharmaceuticals at all.

Still, after discovering the biological cause of what happened, everything began to change.

What made the scientists uncover the cause?

After the further examination, the reason for the incident became known to the researchers. Namely, according to the National Institutes of Health, disulfiram works as an inhibitor for the enzyme aldehyde dehydrogenase that metabolizes alcohol. As a result, alcohol becomes quickly converted into a by-product – acetaldehyde.

The symptoms include red face, nausea, vomiting, headaches, and tachycardia. According to Dr. Robert M. Swift, an expert in addiction medicine, the response to the disulfiram is a biological response because it causes the inhibition of the metabolism of alcohol. Upon discovering the cause of the disease, the peculiar event happening in the factory was explained.

Discovery of disulfiram by Danish scientists

The mysterious discovery about disulfiram was made by the Danish scientists while they were working on something else. It is a historical fact that disulfiram was being researched by the scientists for its possible use in the treatment of parasitic diseases. During the course of their research, the Danish scientists came to the realization that there were patients having the same alcohol intolerance like the workers of the rubber industry.

Not only did it become apparent that the effect occurred regularly, but it also became possible to observe it within the controlled environment of laboratories. Most importantly, the observation raised the idea of a therapeutic use of the compound. If consuming alcohol always causes a specific reaction in patients, disulfiram could prevent alcoholism.

From side effect to a cure

For most drug research, the emphasis is on reducing side effects. Here, the side effect turned into a cure for the condition. This research led to attempts to use disulfiram in aiding individuals in ceasing their consumption of alcohol by creating a strong deterrent. This drug did not suppress cravings or help patients with addiction. Instead, it caused nausea in patients who had consumed it.

The use of disulfiram for treating alcoholism ultimately resulted in the creation of Antabuse, the commercial name for disulfiram. Later on, disulfiram became the first medication that was FDA-approved for treating alcohol dependence. Addiction specialists were using this medication as a behavioral reinforcement to help maintain abstinence from alcohol through a consistent pattern of side effects from drinking.

Why does this discovery matter?

Antabuse became one of the most famous cases of drug re-purposing in medical history.

It was especially surprising because the drug did not arise from a directed search for a treatment of addiction. Instead, it developed through an unusual phenomenon that occurred among workers in a factory setting. Scientists focused their attention on these findings, studied the relevant biological processes, and managed to develop an effective drug out of a chemical used in the industry.

As seen from historical reviews about disulfiram, the transformation from industrial application to use in addiction medicine serves as a demonstration of how science progresses through curiosity and careful observations. The unusual condition affecting workers decades ago led to the discovery of an important biological process that would be used years later to develop a successful treatment of a certain disease. It is yet another example of how some of the greatest medical achievements have started with unexpected observations.