Missouri House members have given first-round approval to legislation taking aim at synthetic drugs.
The bill would add several specific substances to what is considered synthetic marijuana.
It was endorsed by a voice vote Tuesday and needs a second vote before moving to the Senate.
In recent years, Missouri has tried to keep pace with evolving synthetic drugs and twice has approved legislation targeting them. Sponsoring House member Shawn Rhoads says the current bill is needed to stay ahead in the effort.