* Glycyrrhizin can cause [[potassium]] levels in the body to fall. When that happens, some people experience abnormal heart rhythms, as well as high blood pressure, edema (swelling), lethargy, and congestive heart failure.
* Contains [[Coumarin]].
* Drug Interaction : The sweetening compound glycyrrhizin in black licorice may reduce the effects of some blood pressure drugs or urine-producing drugs including Hydrodiuril (hydrochlorothiazide) and Aldactone (spironolactone). It may increase the toxicity risks from Lanoxin (digoxin), used to treat congestive heart failure and abnormal heart rhythms.
==The benefits of Liquorice are:==