State lawmakers heard a variety of opinions on how to limit methamphetamine production today.The number of meth labs in Kentucky has been increasing for years. The drug manufacturer group Consumer Healthcare Products told the Joint Committee on the Judiciary the state should create a database of people who have been convicted of meth-related crimes. Those listed would be blocked from purchasing cold medicines that contain pseudoephedrine, which is used to make meth.Several law enforcement officers, however, say pseudoephedrine should become a scheduled substance, meaning anyone seeking to purchase it would need a prescription.Oregon and Mississippi have both reported success after making pseudoephedrine prescription-only.