Republican Representative Dwight Kay of Glen Carbon told a House committee Monday that he wants to warn users of serious potential side effect such as hallucinations, delusions and impaired thinking.
Illinois' medical cannabis pilot program was sponsored by Democrat Representative Lou Lang of Skokie. Lang says he'd rather wait until the pilot program ends in 20-17 rather than pass piecemeal legislation.
"There may be an opportunity in the future to work on something like this. I just think it's ill-timed," he says.
The committee rejected the measure 5-to-3, with only Republicans supporting passage.
Medical marijuana sales began in Illinois late last year.