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A parasympathomimetic is a drug or poison that acts by stimulating or mimicking the parasympathetic nervous system (PNS). These chemicals are also called cholinomimetic drugs or cholinergics because acetylcholine (ACh) is the neurotransmitter used by the PNS. Chemicals in this family can act by either directly stimulating the nicotinic or muscarinic receptors, or they can act indirectly by inhibiting cholinesterase, promoting acetylcholine release, or other mechanisms.

Some Chemical weapons such as sarin or VX, non-lethal riot control agents such as tear gas, and insecticides such as diazinon fall into this category.

Pharmaceuticals[edit | edit source]

Direct-acting[edit | edit source]

These act by stimulating the nicotinic or muscarinic receptors.

Indirect-acting[edit | edit source]

Indirect acting parasympathomimetic drugs may be either reversible cholinesterase inhibitors, irreversible cholinesterase inhibitors or drugs that promote ACh release or Anti-adrenergic. The latter inhibits the antagonistic system, the sympathetic nervous system.

requiring classification[edit | edit source]

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References[edit | edit source]

See also[edit | edit source]

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