> "a new and improved version of the Novichok agent, which has not been encountered in the world before", was used in Navalny's poisoning. This new type of Novichok is more toxic and dangerous than its previously known variants, but acts more slowly. It had been planned that Navalny would die on board the plane, but he had survived "thanks to a sequence of successful coincidences: the quick reaction of the pilot who made an emergency landing, and the doctors in Omsk, who immediately injected Navalny with atropine". [1]
[1] (German) https://www.spiegel.de/politik/deutschland/alexej-nawalny-so...