The lethal dose of potassium or sodium cyanide is 200 to 300 mg and of hydrocyanic acid is 50 mg. Effects begin within seconds of inhalation and within 30 min of ingestion.
Now why you would want to know this, I'm unsure. Be safe.
http://www.manbir-online.com/diseases/cyanide.htm
50 mg
Many substances are more deadly; an example is the botulinum toxin.
About 150mg of cyanide can kill a 60kg human so about 15g should kill a 6000 kg adult male elephant. The cyanide would kill the elephant in much the same way it kills humans because we are both mammals.
enough of a drug, if you take a lethal dose, it will kill you.
there is no lethal dose of birth control
Apple seeds contain amygdalin, which can release cyanide when metabolized. The amount of cyanide in apple seeds is relatively low, with about 0.6 to 2.0 mg of cyanide per seed. The LD50 (lethal dose for 50% of the population) of cyanide varies, but for horses, it is estimated to be around 2 mg/kg. Therefore, ingesting a significant quantity of apple seeds could potentially be harmful to horses, depending on their weight.
lethal dose of meloxicam for dogs
A Lethal Dose of American Hatred was created in 2020-10.
Cyanides (HCN, KCN, NaCN) are lethal poisons.
Cyanide of potassium, a deadly poison, which he gave to sarah in a glass of stout.
A: Lethal Dose
Um... because that's the definition of lethal? The word means a dose that will kill you.