Earlier quoted context omitted.
Most people who have taken LSD have never seen any LSD either, because the dosage is so small. A strong dose is something like 300 micrograms--this amount of crystal is almost invisible to the naked eye. This also presents problems for chemists, because measuring out such small amounts is prohibitively difficult. So typically they dissolve a measurable amount (say, 30mg) into a volume of liquid (water or alcohol) and…
Thanks a lot for this insightful comment. I guess it could be hidden in any liquid or absorbing medium (paper, cardboard, textile, sponge, whatever... thus making it easy to conceal). I had no idea the drug was that potent... Presumably some neurotoxins have the same potency? This is quite scary to think of.
This document (PDF) from the Multidisciplinary Association for Psychedelic Studies (MAPS) claims:
The LD50 of LSD varies from species to species. The most sensitive species is the rabbit, with an LD50 of 0.3 mg/kg i.v. [52]. The LD50 for rats (16.5 mg/kg i.v.) is much higher [52,53], though mice tolerate doses of 46– 60 mg/kg i.v. [52,54]. These animals expired by paralysis and respiratory failure. Monkeys (Macaca mulatta) have been injected with doses as high as 1 mg/kg i.v. without any lasting somatic effects [55].
There have been no documented human deaths from an LSD overdose. Eight individuals who accidentally con- sumed a very high dose of LSD intranasally (mistaking it for cocaine) had plasma levels of 1000–7000 μg per 100 mL blood plasma and suffered from comatose states, hy- perthermia, vomiting, light gastric bleeding, and respira- tory problems. However, all survived with hospital treat- ment and without residual effects.
https://maps.org/research-archive/w3pb/2008/2008_Passie_2306...