The chemicals are known to be harmful to human health, especially to those who take them to treat eczema.
But now, scientists are warning that the chemicals are being used in the wrong way.
“We are seeing a huge amount of experimentation and development, and there is a lot of hype around these new nicotinic agonists that people have been talking about,” Dr. David Breen, a research associate at the Icahn School of Medicine at Mount Sinai, told ABC News.
Breen said he and his colleagues at Icahn found that people are being exposed to nicotinics at a rate that is too high.
The chemical is called nicotine salt and is often found in e-cigarettes, or electronic cigarettes, which are used to vaporize nicotine and other drugs.
But Breen said that many of these new compounds have been shown to cause a heartburn reaction.
He said people are exposed to nicotine at doses far higher than what is safe, and that it is not safe to use nicotine at a level that is causing the reaction.
Breen also said that he is concerned that nicotine salts may have a similar effect to what people are taking in the form of the more widely known cough suppressant cough syrup, or Cough Rx.
Dr. Thomas J. D’Amato, a researcher at the University of Pennsylvania, told The Associated Press that the compounds have also been shown in animal tests to cause damage to heart tissue.
In some cases, the damage can be so severe that people with heart conditions can have trouble breathing, he said.
Nicotine salts have been widely used as an aid to the treatment of chronic pain, as well as as in some other health conditions.
But they have also attracted criticism for being used as a cough suppressants.
Breens said his team found that some of the new nicotine salts were showing up in the urine of people with asthma and other respiratory diseases.
While many people are getting sick from inhaling nicotine, Breen pointed out that people should be aware of the risks they are putting themselves and others at.
Even if you think it is a good thing, you need to be aware that the way nicotine is used is not good for you.
He said that it was time for the public to stop being scared of it and start treating it as a natural health tool.
ABC News’ Brian Rossman contributed to this report.