Tabun ingestion

Nerve agent Chemical agent inhaled, absorbed through the skin, or ingested that causes interference with the neural synapses and overstimulation of the nervous system, which in turn leads to overreactivity in the muscles and malfunctioning of various organs. The primary agents are tabun, sarin, soman, and VX. 

Ocular exposure to vapor causes miosis, conjunctival hyperemia, and eye pain within one to several minutes. Signs can last 2 to 3 days. Liquid tabun penetrates the eye quickly and can result in death nearly as rapidly as an inhalational lethal dose (1 to 10 min) (EPA, 1985c). Ingestion of the liquid causes muscarinic, nicotinic, and CNS signs about 30 min after mild exposures. The signs can last several hours up to 2 to 5 days depending on the amount of exposure. 

Like soman and sarin, tabun is a highly potent cholinesterase inhibitor. It is extremely toxic by inhalation, ingestion, and... 

People exposed to a low or moderate dose of tabun by inhalation, ingestion (swallowing), or skin absorption may experience some or all of the following symptoms within seconds to hours of exposure ... 

Agent GA (tabun) is an organophosphate ChE inhibitor similar to other nerve agents in mode of action and toxic effects, and it is toxic by all possible exposure routes ingestion, inhalation, and ocular and percutaneous absorption (DA 1974). By the inhalation exposure route, GA is only half as toxic as GB however, at low concentrations it has a greater effect on the eyes (DA 1974). The acute toxicity of GA and other nerve agents has been reviewed in several earlier reports (Carnes and Watson 1989 Dacre 1984 Munro et al. 1994 Sidell 1992 ... 

These are related to organophosphorus insecticides and they include some of the most powerful poisons known to science. They act by inhibition of the enzyme acetylcholinesterase. Most act extremely rapidly within seconds and at very low concentration. Agonising death results from inhalation, ingestion or skin absorption. Best known are DFP, Tabun, Sarin and VX (Chapter 12.13). There may also be serious long-term effects arising from exposure to concentrations below levels which produce any immediately obvious effects. 

Tabun is rapidly absorbed through skin, eyes and mucosal membranes. It will penetrate clothing and may be inhaled when in vapour form. It may also be mixed with food or water for absorption via ingestion. 

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