Licorice, due to its aldosterone-like action, can cause what clinical effects when taken in excess?
Hypokalemia with subsequent hypokalemic myopathy manifesting as flaccid paralysis and QT prolongation with possible torsade de pointes. Other clinical findings can include edema and increased blood pressure. Table 3 in the cited reference offers a more complete list of possible complications related to excess licorice intake.
Omar HR, Komarova I, El-Ghonemi M, et al. Licorice abuse: time to send a warning message. Ther Adv Endocrinol Metab. 2012;3(4):125-138. doi:10.1177/2042018812454322