Found in antifreeze, windshield washer fluid, solvents
Colorless, volatile liquid with distinctive “alcohol” odor<unk>  slowly metabolized to formaldehyde by alcohol dehydrogenase
Formaldehyde then quickly metabolized to formic acid by aldehyde dehydrogenase
Very toxic formic acid slowly metabolized, which translates to two clinical features:
Latency and delay in onset of symptoms
Prolonged symptoms due to accumulation of formic acid
Parent compound causes only mild inebriation; metabolite (formic acid) causes<unk>  both directly and indirectly
Binds to cytochrome oxidase > blockade of oxidative phosphorylation > lactic acidosis
In itself causes anion gap metabolic acidosis
Most exposures from ingestion; may be systemically absorbed after inhalation or dermal exposure but rarely causes significant clinical<unk> 
Latency and delay in onset of symptoms
Prolonged symptoms due to accumulation of formic acid
Binds to cytochrome oxidase > blockade of oxidative phosphorylation > lactic acidosis
In itself causes anion gap metabolic acidosis
Methanol toxicity
Absinthe
Isopropyl alcohol toxicity
Barbiturates
Ethanol toxicity
Benzodiazepines
Ethylene glycol toxicity
Flunitrazepam 