Methyldopa and clonidine are anti-hypertensive drugs which are used le
ss commonly nowadays. Experience of toxicity and self-poisoning with t
hese drugs remains limited. This review examines the cases reported in
the literature of overdosage or poisoning with methyldopa and clonidi
ne, and the presenting symptoms and management in such cases. With sup
portive therapy, the prognosis following toxicity with methyldopa and
clonidine is good. Although an initial presentation with drowsiness or
coma is common, careful attention should also be directed to any card
iovascular complications.