Licorice Effects

Licorice Effects

Liquorice (Glycyrrhiza glabra) is a sweet root widely used in traditional medicine, foods, and herbal remedies for centuries. Beyond flavouring candies and teas, it carries a long reputation for supporting digestion, respiratory health, and stress relief. However, it’s also one of those herbs where the dose and form matter a lot—because too much can cause real problems.

Uses of Liquorice

Digestive Aid: Liquorice is often used to soothe stomach discomfort, acid reflux, gastritis, and ulcers. Its natural compounds form a protective coating on the stomach lining and may help reduce irritation.

Respiratory Support: In Ayurveda, Chinese medicine, and European herbal traditions, liquorice tea or syrup has been used for coughs, sore throats, and bronchitis. It works as a mild expectorant, helping clear mucus and ease throat irritation.

Anti-inflammatory Effects: Liquorice root contains glycyrrhizin and flavonoids, which may reduce inflammation. Some studies suggest benefits for conditions like eczema or skin irritation when applied topically.

Stress and Adrenal Health: Herbalists sometimes recommend liquorice as an adaptogen, supporting adrenal glands in times of stress or fatigue. Deglycyrrhizinated liquorice (DGL) supplements are especially popular since they remove the compound most linked to side effects.

Other Uses: Liquorice has been studied for its antimicrobial and antiviral properties. Extracts show promise against certain bacteria and viruses, although this is still in the early stages of research.

Side Effects and Risks

While liquorice sounds harmless—especially since people often think of it as just “candy flavouring”—the root can be potent. The main concern comes from glycyrrhizin, a compound that can disrupt the body’s fluid and mineral balance.

High Blood Pressure and Water Retention: Glycyrrhizin may cause the body to retain sodium and lose potassium, leading to elevated blood pressure, swelling, and headaches.

Heart Rhythm Issues: In extreme cases or with long-term high doses, low potassium levels can trigger irregular heartbeats.

Hormonal Effects: Liquorice may mimic estrogen, potentially affecting hormone-sensitive conditions or interfering with medications like birth control.

Drug Interactions: It can interact with diuretics, corticosteroids, blood pressure medicines, and anticoagulants, making medical guidance essential before use.

Because of these risks, people with hypertension, kidney disease, liver disease, or heart conditions should avoid regular liquorice intake. Pregnant and breastfeeding women are generally advised not to use it, as high consumption has been linked with possible complications.

Safe Use and Alternatives

Moderate amounts of liquorice in foods and teas are usually safe for healthy adults. The problems arise from concentrated supplements or chronic high intake. For those who want the digestive benefits without the side effects, deglycyrrhizinated liquorice (DGL) is available. This form removes most of the glycyrrhizin while preserving soothing properties for the stomach and throat.

Bottom Line

Liquorice root is a fascinating plant—part ancient remedy, part modern health debate. In small, mindful doses, it can help calm the stomach, ease a cough, or support recovery from stress. However, in larger or long-term amounts, it poses significant risks, particularly to blood pressure and heart health. Like many powerful herbs, it’s best approached with respect, moderation, and medical guidance when used beyond occasional teas or treats.