Licorice tablets are widely recognized as an over-the-counter remedy for cough suppression and expectoration. Their use is commonplace, with many instinctively reaching for them when coughing. Chen Hui, a pharmacist at Beijing Chaoyang Hospital's Pharmacy Department, explained that licorice extract powder—the primary ingredient—effectively moistens the lungs, suppresses coughs, and promotes expectoration. However, it is not suitable for long-term consumption.Chen Hui explains that licorice tablets contain opium powder—essentially opium—which acts as a central cough suppressant. Despite its low concentration, prolonged high-dose use can lead to addiction. Upon discontinuation, patients may experience frequent yawning, cold sweats, runny nose, and even restlessness, often requiring two to three months to recover. Below, we detail the side effects of licorice tablets.
Beyond these two main components, licorice tablets also contain camphor, star anise oil, and sodium benzoate. Camphor provides local anesthesia and expectorant effects. Star anise oil, being volatile, stimulates glandular secretion upon entering the respiratory tract, thinning phlegm to facilitate coughing it up.These components work synergistically to produce the pronounced cough-suppressing effect of licorice tablets. Sodium benzoate serves as the preservative in this medication, offering some antibacterial properties. Licorice tablets should not be used for more than 3 days. Licorice tablets are suitable for dry coughs caused by external irritants and are considered symptomatic treatment.When self-administered, use should not exceed 3 days. If symptoms persist after 3 days, seek diagnosis at a medical facility for appropriate treatment.
The licorice component in these tablets has hormone-like effects. Long-term use may cause gastric ulcers. It is recommended to dissolve the tablets after meals to minimize gastrointestinal irritation. Additionally, the opiate component may cause side effects such as nausea, vomiting, and constipation.Furthermore, licorice promotes water and sodium retention, potentially elevating blood pressure. Therefore, individuals with hypertension should use it cautiously. It may cause miscarriage in pregnant women, so pregnant and lactating women should also avoid it. This concludes our overview of the side effects associated with licorice tablets. We hope this information proves helpful. Wishing you good health and smooth sailing this winter.