Hidden Risks of Black Licorice (2024)

A Rutgers expert discusses how eating black licorice can affect your health

This week, The New England Journal of Medicine reported that a man with a poor diet died of cardiac arrest after eating a bag-and-a-half of black licorice daily for weeks.

Diane Calello, executive medical director of the New Jersey Poison Control Center, based at Rutgers New Jersey Medical School, discusses safe consumption of black licorice.

How safe is it to eat black licorice?

Black licorice is definitely safe to eat in small amounts. The case in the journal involved excessive consumption with very limited diet otherwise. However, it is important to realize that black licorice is more than just candy. It contains glycyrrhizic acid, which can cause swelling and high blood pressure and deplete potassium and other electrolytes that may cause a cardiac arrhythmia or arrest. Glycyrrhizic acid can be found in other foods, such as jelly beans and beverages for flavor.

What is a safe amount to consume?

There is not a specific “safe” amount, but people with high blood pressure or heart or kidney disease should avoid black licorice, which could worsen these conditions. For people over 40, the FDA says that more than two ounces a day for two weeks may be problematic and cause irregular heart rhythm or arrhythmia.People who are on medications or supplements that may be affected by licorice consumption should consult their doctor.

All foods and beverages should be consumed in moderation. It’s Ok to enjoy an occasional black licorice, but it should not be part of your daily diet, particularly if you have underlying conditions that might be worsened by it.

Should people be concerned about licorice-flavored food and beverages?

Likely no. Many “licorice” or “licorice flavor” products contain anise oil, which has the same smell and taste but not actual licorice.

Hidden Risks of Black Licorice (2024)

FAQs

Hidden Risks of Black Licorice? ›

It contains glycyrrhizic acid, which can cause swelling and high blood pressure and deplete potassium and other electrolytes that may cause a cardiac arrhythmia or arrest.

What are the negative effects of black licorice? ›

Too much glycyrrhizin can therefore lead to problems such as raised blood pressure, fluid retention, muscle weakness and heart rhythm abnormalities (arrhythmia). The good news is that if liquorice has this effect on you, the changes are not normally permanent.

What are the symptoms of a licorice overdose? ›

High blood pressure, [22, 23] including dangerously high blood pressure with symptoms such as headache, nausea, vomiting, and hypertensive encephalopathy with strokelike effects (eg, hemiplegia) Spasms/tetany. Hyporeflexia, muscle wasting, weakness, flaccid paralysis.

How to treat licorice toxicity? ›

In cases of suspected chronic toxicity, monitor electrolytes, especially potassium. Supplement potassium, as indicated. Consider potassium-sparing diuretics, as needed. Treat rhabdomyolysis, if present, with hydration.

Is licorice root carcinogenic? ›

Isoangustone A (IAA) is a novel flavonoid compound found in licorice root that has been reported to exert anticancer activity mainly by affecting cell cycle and apoptosis.

Is black licorice hard on your liver? ›

Nevertheless, studies in cell culture and in animal models have repeatedly found that glycyrrhizin and licorice extracts decrease or prevent liver injury from a variety of insults including chemotherapeutic agents, acetaminophen, prescription drugs, obesity and ischemia.

What does black licorice do to your stomach? ›

Its also popularly used as a natural laxative, so it can help with constipation, and as an aid for digestive problems. According to the medical journal, Nutrition and Cancer, substances in licorice may even protect against carcinogen-induced DNA.

How much black licorice is safe per day? ›

Products that contain licorice must be labeled. Manufacturers list licorice extract or glycyrrhizic acid in the ingredient list. According to the WHO, up to 100 mg per day of glycyrrhizic acid, equal to about 2–2.5 ounces (60–70 grams) of licorice, is safe for the majority of adults.

What is the black licorice syndrome? ›

Consumption of large doses of GZA in licorice extract can lead to hypokalemia and serious hypertension, a syndrome known as hypermineralocorticoidism. [13, 14]

What does licorice do to your system? ›

Licorice with glycyrrhizin may cause serious side effects. Too much glycyrrhizin causes a condition called pseudoaldosteronism, which can cause a person to become overly sensitive to a hormone in the adrenal cortex. This condition can lead to headaches, fatigue, high blood pressure, and even heart attacks.

What medications should not be taken with licorice? ›

Liquorice extract has mineralocorticoid-like effects and can cause hypokalaemia, hypertension, cardiac arrhythmia and myopathy. Patients taking fludrocortisone or medicines which can deplete potassium should avoid eating liquorice or taking supplements containing liquorice extract.

Is black licorice a laxative? ›

Licorice also exhibits mild laxative properties, aiding in relieving constipation by promoting bowel movements. Additionally, licorice has been studied for its role in supporting a healthy gut microbiome, specifically regarding the eradication of H. pylori infection.

Why do I crave licorice? ›

The most prevalent compound in liquorice, and the most studied, is glycyrrhizin, also known as glycyrrhizic acid. This has hormonal effects resembling those of aldosterone, an adrenal gland hormone that is responsible for maintaining mineral balance in the blood by helping the body retain sodium and excrete potassium.

Are there any benefits to eating black licorice? ›

It's popular in these natural non-pharmacological therapies because licorice contains a lot of potentially healthy components, including ones that have anti-inflammatory, antioxidant, antiviral, anticancer, hepatoprotective (protects the liver), and neuroprotective (prevents nerve cell death) properties.

Can you eat black licorice every day? ›

Licorice that contains glycyrrhizin is possibly unsafe when consumed in large amounts or for a long time. Eating licorice 5 grams or more daily for several weeks can cause severe side effects including heart attack. People who have heart disease, kidney disease, or high blood pressure are more sensitive to it.

What is the healthiest licorice to eat? ›

If you want the most nutritious licorice available on the market, look no further than Panda all-natural sweet licorice. The list of ingredients for the licorice-based treats is impressively short. They are made from molasses, which contains a high nutritional value and is rich in protein.

Top Articles
Latest Posts
Article information

Author: Arline Emard IV

Last Updated:

Views: 5813

Rating: 4.1 / 5 (52 voted)

Reviews: 83% of readers found this page helpful

Author information

Name: Arline Emard IV

Birthday: 1996-07-10

Address: 8912 Hintz Shore, West Louie, AZ 69363-0747

Phone: +13454700762376

Job: Administration Technician

Hobby: Paintball, Horseback riding, Cycling, Running, Macrame, Playing musical instruments, Soapmaking

Introduction: My name is Arline Emard IV, I am a cheerful, gorgeous, colorful, joyous, excited, super, inquisitive person who loves writing and wants to share my knowledge and understanding with you.