Intense psychedelic experiences can include sensations of dying or extreme cardiovascular events like a racing heart.

“Because I've had people there on the couch... Yeah, I remember one lady said, this is probably 13, 14 years ago, said, "Matt, tell me again, I can't die". "I feel like my heart is going to rip through my chest." I mean, she was feeling...”

“I should say, typically cardiovascular response is is modest. The the uh pulse and blood pressure go up. Then if it goes over a certain level, we have a protocol and we've had to do this only a few times, but the physician comes in, gives them a little nitroglycerin under the tongue and uh you know, knocks the blood pressure down a little bit, doesn't affect the experience.”

“Um but but yeah, but someone can feel that my god, I'm going to die. Like I I have never felt my heart beat like this before.”