In November, we told you about a teen in Polk County who says he tried K2 at a friend's house; it knocked him unconscious for five hours. In West Plains, law enforcement and school officials also see its effects.

"We're seeing it in the middle school, even 6th, 7th, 8th grade, even in the high school," said Detective Shawn Rhoades with the West Plains Police Department.

K2 is sold in three stores in West Plains alone; one of them is Naturally Enchanted.

"I was the first person who started carrying the K2 in town," said Naturally Enchanted owneer Joy Dishneau.

K2's ingredients include several natural herbs but, according to research at the Johnson County, Kan., crime lab, also synthetic chemicals called JWH-018 and JWH-073.

"The individual who created it, John Huffman, I believe is his name, he's been quoted as saying it definitely could have toxic effects for an individual and should definitely not be used for recreational use," said Rep. Ward Franz, R-West Plains.

Many use it like marijuana, or even for medical purposes.

"I have people in my store that have quit smoking cigarettes, some people who have had really bad arthritis and stuff like that; it's been helping them," said Dishneau.

Dishneau says her store doesn't sell to anyone under 18 but the kids are getting hold of it.

"There are different effects that it has on different kids. I've had it range from: 'It's done nothing for me,' to 'It's just like smoking marijuana,' people who have passed out for hours and woke back up," said Rhoades.

Because of the variety of effects, and the lack of research on them, Franz is pushing to ban the currently legal K2.

"We can't have our children going out and smoking this because they think it's just for fun. We don't know anything about it," said Franz.

Dishneau says, because of K2, she just paid the state more sales tax than she ever has. Law enforcement officers worry, because it's legal and not restricted, kids could theoretically buy it. They also say one store in West Plains was recently burglarized and the target was K2.

In an e-mail message, the Johnson County, Kan., Sheriff's Department provided this information about its analysis of K2:

"In October of 2009, the Johnson County (KS) Sheriff’s Office Crime Lab received samples of an herbal vegetation product called 'K2.' Four different K2 varieties were submitted for examination – Standard, Summit, Citron, and Blonde. Personnel from the Drug Chemistry Section were requested to determine if the samples contained tetrahydrocannabinol (THC) or any other controlled substances. Law enforcement officers and school officials in the Johnson County, Kansas, area had received numerous reports that individuals were getting intoxicated by smoking K2 products.

"All four samples were examined by routine analytical methods used by the Drug Chemistry Section. Analysis confirmed the presence of two different non-controlled, synthetic cannabinoids in all four K2 varieties. The identified compounds were 1-pentyl-3-(1-naphthoyl)indole, more commonly referred to as JWH-018, and 1-butyl-3-(1-naphthoyl)indole, more commonly referred to as JWH-073.

"JWH-018 and JWH-073 possess different chemical structures compared to THC; however, published research, as well as anecdotal information, indicates both compounds have similar to more potent effects on the central nervous system compared to THC."