Grace Slick tells a story that once upon a time she and the Starship gang were walking through Amsterdam with the crew from The Doors. Said the Dutch kids were swarming them, most of them wanting to give them some little packet of ... something. She said everybody else was saying a polite "Thank you" and pocketing the whateritwas to check out (and maybe take) later. But not Morrison. He was downing it, right there on the spot, no questions asked. And still managing to walk down the street.
She said she was amazed he lived to 27.
Which is presumably why they officially didn’t perform an autopsy. Supposed alcohol issues, though probably disclosed to cover for the drugs.