Parathion

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Class: Indirect-acting Cholinomimetics
Mode of Action: Covalent modification of serine residue in AChE active site
PharmacokineticsDuration of action: hours to days  (long-lived covalent intermediate)
Organ Effects: 

Eye: miosis
CV: ↓ HR and ↓BP
GI: ↑ motility and ↑acid
Bladder: ↑urine
Glands: ↑
Paralysis

Clinical Uses: NONE! Insecticide
Toxicities Mnemonic: 

Diarrhoea
Urination
Miosis/muscle weakness
Bronchorrhea
Bradycardia
Emesis
Lacrimation
Salivation/sweating

DrugsClass
BethanecholDirect-acting muscarinic Cholinomimetics
PilocarpineDirect-acting muscarinic Cholinomimetics
NicotineDirect-acting nicotinic Cholinomimetics
EdrophoniumIndirect-acting Cholinomimetics
NeostigmineIndirect-acting Cholinomimetics
ParathionIndirect-acting Cholinomimetics