EXCLUSIVE

10 out of 10 active NBA players believe it's time to LEGALIZE medicinal marijuana in the NBA ... and the recent video of Kevin Durant dropping prescription pot in L.A. is only fueling the pro-weed fire.

Here's the dilemma ... since Rx weed is already legal in several states, should the league continue to outlaw the green stuff if a player has a legitimate prescription from a doctor???

We asked 10 active NBA players (all of whom wanted to remain anonymous) ... and they all made it very clear -- it's time to legalize it!!!

One player told us, "How can you tell a guy with a prescription not to use it?? They should be allowed to have their medicine."

Another said ... "The NBA shouldn't advertise for it, but I don't see an issue if a player uses [with a prescription]."

Overall, the players believe the league needs to change with the times -- though they agree, the NBA is more progressive than other major sports leagues like the NFL and MLB and could be a real trailblazer when it comes to pot policy.

But don't expect things to change overnight -- we spoke with the NBA Players Association ... which told us the issue could be on the table at the next collective bargaining session in 2017.

"It's too early to say if this is an issue that the members want to address in the next round of bargaining."