<unk>  has a high<unk>  in humans. As little as 10 mL of pure<unk>  when drunk is metabolized into formic acid, which can cause permanent blindness by destruction of the optic nerve. 15 mL is potentially fatal, although the median lethal dose is typically 100 mL (3.4 fl oz) (i.e. 1–2 mL/kg body weight of pure<unk> . Reference dose for<unk>  is 0.5 mg/kg/day.<unk>  is sometimes denatured (adulterated), and made poisonous, by the addition of<unk> . The result is known as methylated spirit, "meths" (British use) or "metho" (Australian slang). This is not to be confused with "meth", a common abbreviation for methamphetamine and for methadone in Britain and the United States.
Methanol toxicity
Toxic alcohol
Tin poisoning
Infection
Sulfuric acid poisoning
Serotonin syndrome
Hydrocarbon poisoning
Diabetic ketoacidosis