Old enough that we know: > Chloroquine is very toxic in overdosage; overdosage is extremely hazardous and difficult to treat. Urgent advice from the National P

Old enough that we know: > Chloroquine is very toxic in overdosage; overdosage is extremely hazardous and difficult to treat. Urgent advice from the National Poisons Information Service is essential. Life-threatening features include arrhythmias (which can have a very rapid onset) and convulsions (which can be intractable). Self-medicating can easily lead to overdosing, especially when using a drug with a low therapeutic index like chloroquine. https://bnf.nice.org.uk/drug/chloroquine.html https://bnf.nice.org.uk/drug/chloroquine.html