任何一种神经毒剂都可能是最致命的化学物质。 Sarin，VX和相关化合物比大多数其他化合物致命得多。 例如，沙林的毒性是氰化氢的约500倍。 不需要吸入神经气体才有效。 它可以通过皮肤吸收。 虽然可以以极低的剂量存活，但受害者通常会遭受某种程度的永久性神经损伤。 VX甚至可能更强大，尽管在战斗中从未使用过神经毒剂，因此其上的数据较少。 VX会抑制神经系统中的一种酶，从而不断激发信号。 失去对身体功能的控制，窒息和抽搐会导致死亡。
Any nerve agent is probably the deadliest chemical. Sarin, VX and related compounds are far more deadly than most other compounds. For example, sarin is about 500 times more toxic than hydrogen cyanide. No need to inhale nerve gas to be effective. It can be absorbed through the skin. Although it is possible to survive at very low doses, victims often suffer some degree of permanent nerve damage. VX may even be more powerful, although nerve agents have never been used in combat, so there is less data on it. VX inhibits an enzyme in the nervous system, which constantly triggers signals. Loss of control over body functions, suffocation and convulsions can lead to death.