The Wisconsin Senate adjourned abruptly Tuesday night after the chamber failed to take up a bill that would allow the sale of cannibidioid (CBD) oil without a prescription.

The oil, derived from marijuana plants, has been used to treat seizures in children. Its use was legalized in 2014, but under current law only licensed providers can obtain it. This legislation would have eased those rules to allow easier access for parents.

But some lawmakers are concerned it would open the door to unintended consequences, including full legalization of marijuana.

Those concerns prevented the bill from being scheduled for a vote, said Senate Majority Leader Scott Fitzgerald, R-Juneau. The proposal previously passed the Assembly on a voice vote.

"We have people in our caucus that feel very strong about this issue on both ends, and some that are indifferent," Fitzgerald said.

Democratis attempted to force a vote on the bill despite its absence from the calendar. But Fitzgerald had scheduled it for a committee hearing on Thursday, making it unavailable for such a motion.

That conflict led to a heated procedural debate as the Senate neared the end of its session shortly before 10 p.m.