What is dart frog toxin, which is said to have been used to kill Alexei Navalny?

Epibatidine is about a hundred times more potent than morphine, and derived from frogs native to South America• Russia killed Alexei Navalny with frog toxin, UK and four European allies sayEpibatidine, the dart frog toxin Britain says was used to kill Alexei Navalny, is about a hundred times more potent than morphine.The extremely toxic nicotine-like substance was first derived from the Epipedobates genus of poison dart frogs native to northern South America – which do not occur naturally in Russia. Continue reading...