questionedithistorytranslationsCurrent version This is the accepted version. added by Ninjai June 10, 2018, 1:26 p.m. What substance has the lowest value of LD50 (median lethal dose)? SarinBotoxRicinArsenicThe value of LD50 for a substance is the dose required to kill half the members of a tested population after a specified test duration. Botox is the most acutely lethal toxin known, with an estimated human LD50 of 1.3–2.1 ng/kg intravenously or intramuscularly and 10–13 ng/kg when inhaled.NinjaiShare and bring new players to the game!0Very uninterestingToo difficultPoorly writtenIncorrect or questionableCorrect this questionwikipedia → Botulinum toxin2Very interesting! wikipedia → Botulinum toxinreach: rather globalchemistrytoxinsVotes +1 Very interesting! --- +1 Very interesting! Ts Acceptable M