MDMA, better known as Ecstasy, is already famous as a party drug.
But now its popularity as a medical treatment has grown to the point that the FDA approved large-scale clinical trials for the drug, The New York Times reports.
Specifically, Ecstasy has been used to treat PTSD. One study found a 56 percent decrease in severity of PTSD symptoms after just three doses.
Our best therapies right now don't help 30 to 40 percent of people. So we need more options.
This could be great news for doctors. PTSD can be very difficult to treat, Dr. Charles Marmar of the New York University Langone School of Medicine said.
It's been used as a medicine since the 1970s, VICE News reports.
The risk is, of course, Ecstasy can be easily abused. In the United Kingdom, Ecstasy-related deaths hit an all-time high of 50 in 2014, according to the Office for National Statistics.
Ecstasy is currently listed as a Schedule I drug (like marijuana) by the Drug Enforcement Agency and is considered to have no known medical use.
We can sometimes see this kind of remarkable improvement in traditional psychotherapy, but it can take years, if it happens at all.
The researchers involved have applied for "breakthrough" status, which means the drug could be available by 2021.
WATCH | For more news you need, check out our 60 Second Circa.