Control food and drug administration United States warns, during the celebration of Halloween, do not abuse the black licorice!
2 ounces of black licorice a day for adults older than 40 years in the two weeks leading to arrhythmia, sometimes such severity that have to go in an ambulance. Cause fibrillation is glycyrrhizin contained in the root of the licorice in large quantities it increases the level of potassium in the body, which in turn increases kawanee pressure and causes the arrhythmia. It can also cause swelling, especially dangerous for people with heart failure.
However, once you stop eating liquorice, your potassium levels to normal without special health consequences.
However, in folk medicine, licorice, or Glycyrrhiza, is used as a remedy for heartburn, stomach ulcers, sore throat, cough and even against viral infections, although scientists have not yet proved its effectiveness in all of these cases.
Also some medicines should not be used with licorice, especially drugs for the heart and contraception, unsafe, will mix it with some supplements and herbs.
And remember, many products with the taste of licorice does not actually contain any licorice, so if you have problems with heart - just ask about the composition of sweets.