An amendment to state law making synthetic drugs illegal took effect Tuesday.
The synthetic drugs commonly known by names like meow-meow and bath salts are among the substances made illegal by the law.
Those substances or other similar products have been readily available at some head shops, smoke shops and convenience stores.
A representative of Ball Adult Bookstore and Video in Billings confirmed that the store sold “potpourri” until the law went into effect, but declined to comment further.
The amendment was part of House Bill 140, which was passed in the last legislative session.
The law makes it illegal to manufacture, possess or sell synthetic drugs that mimic the effects of existing illegal drugs.
The amendment added “dangerous drug analogue” to the list of controlled substances defined in Montana Code Annotated 50-32-101.
The new verbiage defines “dangerous drug analogue” as any substance chemically similar or derived from existing controlled substances, or any product that is “expressly or impliedly represented to produce or does produce a physiological effect similar to or greater than the effect of a dangerous drug.”