NASHVILLE (AP) - Authorities have shut down 11 Nashville convenience stores for allegedly selling synthetic marijuana or similar substances.

The raid on Tuesday follows passage of a new state law that makes the sale of synthetic drugs a felony. The law also allows businesses allegedly engaged in distribution to be padlocked as public nuisances.

Officials say the products are packaged to appeal to teenagers and young adults. But they say the fake drugs have side effects that include vomiting, profuse sweating, elevated blood pressure, hallucinations and even death.

Tennessee Bureau of Investigation Director Mark Gwyn said Nashville is the first to fully enforce the law. But he said the problem extends beyond Davidson County, and he hopes the raids will be an example to similar stores across the state.