They’re sold in gas stations, vape shops, online and in other stores around the country in seemingly countless enticing forms: gummies, chocolate bars, chips. Their packaging lists things like delta‑8 THC, micro- and macrodoses of “psychedelics” and “nootropics.”
These substances are often sold through legal loopholes, despite concerns about potential health risks and a lack of oversight of how they’re produced. And in the absence of federal rules, many states have banned or have tried to ban delta‑8 THC.

Legal but under-regulated drugs are easy to …