What is the strongest poison?
Michael Gray
Updated on May 26, 2026
Botulinum toxin
Scientists differ about the relative toxicities of substances, but they seem to agree that botulinum toxin, produced by anaerobic bacteria, is the most toxic substance known. Its LD50 is tiny – at most 1 nanogram per kilogram can kill a human.What is the hardest poison?
1. Botulinum (ingested) It's hard to rank the lethality of toxins, but experts agree that botulinum – several orders of magnitude deadlier than sarin – is the gold standard. Your nervous system fails and you die in extreme pain.What is the most poison thing?
The most venomous animals on Earth, ranked
- Boomslang. ...
- Dubois sea snake. ...
- Coastal taipan. ...
- Cone snail. ...
- Irukandji jellyfish. ...
- Blue-ringed octopus. ...
- Inland taipan snake. ...
- 1. Box jellyfish. Although the Australian box jellyfish just misses having the most potent venom on this list, it is probably the most deadly.