According to a case report in the Lancet it can by inducing hypokalemia. We're not talking about a couple pieces of licorice a day here but more like 250-500 g a day for several years.
For those interested, here are the mechanistic details:
Source
Gerritsen, K. et al. "An unusual cause of ventricular fibrillation." Lancet. v 373. 28 March 2009.