Cholinergic poisonings are caused by substances that stimulate, enhance or mimic acetylcholine. This leads to an enhanced activation of the parasympathetic nervous system. Here are a couple of mnemonic SLUDGE

S alivation
L acrimation
U rination
D iaphoresis and defecation
G astrointestinal upset
E xcessive bradycardia or tachycardia (muscarinic or nicotinic)

Another mnemonic is DUMBELLS

D iarrhoea
U rination
M iosis/ M uscle weakness
B ronchorrhea
B radycardia
E mesis
L acrimation
S alivation/ S weating

Sources of cholinergic poisoning include organophosphate poisoning (pesticides) and nerve agents