this post was submitted on 25 Feb 2024
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Yes, I came here for this conversation. What's the ratio of effective dose to LD50 again, because that's typically what matters. That's where cannabis and ethanol are in totally different categories. And how high do you need to get before dying from LSD?
16.5 mg is 16500 μg. So a 70kg person would need over 1 million μg.
According to https://www.trippingly.net/lsd/the-lsd-dosage-guide, 25 μg is where visual effects start.
A deadly dose is around 800x higher than that. You wouldn't be as high as a kite. You'd be as high as Voyager one.
The data about LSD lethality in humans is sparse at best it seems: https://www.healthline.com/health/substance-use/can-you-overdose-on-lsd#risk-of-death
That dose of 16.5mg/kg ld50 is for rats.
Mice is lower at 0.3mg/kg.
There have been no know deaths from humans overdosing on lsd, even when people have taken ridiculously high amounts by mistaking it for cocaine and railing lines of it up their nose.
Sure, a little coma, hypERthermia and light gastric bleeding but nothing a short stint in the hospital didn't sort em out with no lasting effects.