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@visac: Akurat ld50 1,5mg przy szczurach przy podaniu podskórnym. Dla ludzi iv:

Lethal Dose of 50 percent of humans occurs at a certain scale which is proportionate to body mass. Fentanyl’s LD50 rating is .03 mcg/kg (micrograms per kilogram). Given that a microgram is .001 of a milligram, this equals an average 70 kilogram (155 pound) person requiring 2.1 mgs of fentanyl to kill them. Some, already tolerant to opioids, require