New drugs of abuse are sending thousands of people to emergency departments. They're called "fake pot", "fake weed", and "fake cocaine", but their effects are real and dangerous. Some users of these drugs are ill for days - not at all what they expected.

Synthetic marijuana is called Spice, K2, and many other names. It contains crumbly dried plant material sprayed with chemicals that mimic the active ingredients in marijuana. Sold as incense or potpourri, it is neither - users smoke the material as they would marijuana. Users can develop high blood pressure, a very fast heart rate, vomiting, seizures, and hallucinations. Deaths have been reported.

No one yet knows exactly what is causing these symptoms. The herbs or plant materials are unknown. The chemicals being sprayed on them have never been tested in humans. Since the drug is produced without any kind of legal oversight, there is no quality control; no one knows exactly what is being sprayed, how concentrated it is, or whether it is contaminated with other unknown substances. People who smoke synthetic marijuana in effect are subjecting themselves to unregulated, unsupervised experimentation.

"Bath salts", "plant food", and "plant fertilizer" are among the misleading names for another new type of drug. These powders, meant to be swallowed or snorted, are central nervous stimulants; their effects are similar to cocaine and amphetamines. Users can develop high blood pressure, fast heart rate, paranoia, and severe, long-lasting panic attacks. As with synthetic marijuana, users cannot know exactly what they are getting when they buy and use these drugs, which may contain variety of unregulated ingredients.

The U.S. Drug Enforcement Administration recently used emergency authority to place synthetic marijuana on its list of Schedule 1 drugs, along with heroin and cocaine. Legislation presented to the U.S. Congress would make the ban permanent. Several states have already introduced legislation banning "bath salts".

If you have questions about "Spice", "K2", "bath salts" or other drugs, call the poison center for information at 1-800-222-1222. Call right away if someone has used one of these misleadingly-named drugs and is having symptoms. Poison center experts are available 24 hours a day. All calls are confidential.