The Drug Enforcement Administration (DEA) has removed a marijuana-based medication from the list of federally controlled substances.

GW Pharmaceuticals announced on Monday that Epidiolex, a prescription drug it developed that’s derived from cannabis and used in the treatment of epilepsy, had been taken off Schedule V of the Controlled Substances Act. Effectively immediately, the CBD medication is no longer a controlled substance, the company said.

That means individuals will be able to more easily obtain Epidiolex. GW said in its notice that it will “begin the process of implementing these changes at the state level and through the EPIDIOLEX distribution network.”

After that point, state reporting requirements under prescription drug monitoring programs will no longer be applicable. Like many non-controlled drugs, people will still need to get a prescription from a doctor, but those prescriptions will be valid for up to a year and can be transferred among pharmacies.

“This notification from DEA fully establishes that EPIDIOLEX, the only CBD medicine approved by FDA, is no longer a controlled substance under the federal Controlled Substances Act,” Justin Gover, CEO of GW, said in a press release. “We would like to thank DEA for confirming the non-controlled status of this medicine.”

“Importantly, the descheduling of EPIDIOLEX has the potential to further ease patient access to this important therapy for patients living with Lennox-Gastaut Syndrome and Dravet syndrome, two of the most debilitating forms of epilepsy,” he said.

The Food and Drug Administration (FDA) approved the medication in 2018. DEA said it would be placed in Schedule V, rather than Schedule I like marijuana and its derivatives.

FDA pushed back in a letter to the agency, arguing that CBD carries minimal risks and has established health benefits and so it shouldn’t be controlled at all. DEA replied that international treaty obligations warrant its control, albeit in the least restrictive category of Schedule V. FDA then said that if that changed, the agency should “promptly” revisit its status as a controlled substance.

Last year, the World Health Organization clarified that CBD containing no more than 0.2 percent THC is “not under international control.”

Meanwhile, FDA is in the process of developing regulations for hemp-derived cannabidiol products that aren’t approved as medications following the 2018 Farm Bill’s legalization of the crop and its derivatives. The agency said in a report to Congress last month that the rulemaking process is ongoing, but it is actively exploring pathways to allow for lawful sales of the cannabis compound as a dietary supplement, and it’s developing enforcement discretion guidance for products that are currently on the market.