Betty Chan is a clinical toxicologist and emergency physician with major interests in cardiovascular drug poisonings, antidotes and cognitive function following poisoning. She is an Associate Professor with the University of New South Wales - Clinical Lead in Discipline of Critical Care, a consultant with the NSW Poisons Information Centre and an associate Editor of the journal Clinical Toxicology. She is head of the Clinical Toxicology unit at Prince of Wales Hospital, South Eastern Area Toxicology Service (SEATS). Her research findings have led to a change of clinical guidelines in the use of digoxin-Fab in acute and chronic digoxin poisonings, folinic acid in acute and chronic methotrexate poisoning. She has initiated a number of projects which have provided clinical data for further studies in tapentadol poisoning, the use of haemodialysis for acute and chronic lithium poisoning, optimal methods to manage severe tricyclic antidepressant and dihydropyridine poisonings.