If you mean 56/200 then it is 7/25
56,200
56200
It is: 5.62*10^4
A little, and a lot, can kill a human, wiki states that 0.2g can be fatal to a human, but it fails to give a weight of that human, MSDS States LD50(lethal dose kill rate of 50% of tested subjects) performed on rats injected with coniine: 30 mg/kg so if we are like rats and talking about a person that weighs 180 lbs, which is about 80 kg, it would take 30*80 = 2400 2400 mg or 2.4 g, couple pea sized amounts would kill 50% of the people who injected this amount. double that amount to 5g, you would have a lethal dose about 100% I am not sure about the oral dose, but i doubt that it strays to far from this number, perhaps 1mg/kg, but i do not know. Birds that injested coniine : 56200 ug/kg