What substance does realgar, a traditional Chinese medicine, belong to?
Realgar is a commonly used traditional Chinese medicine (TCM) in daily life. A proper understanding of its properties and applications enables optimal therapeutic effects. So, what kind of substance is realgar in TCM?
What type of substance is realgar in traditional Chinese medicine?
Realgar itself has a pungent and bitter taste, is neutral in nature, and is toxic. It enters the Heart, Liver, Spleen, Stomach, and Large Intestine meridians. Its actions include detoxification and anticancer effects, expectoration and anticonvulsant activity, insecticidal and wound-healing properties, as well as anti-inflammatory and swelling-reducing effects. Therefore, physicians often recommend realgar for treating venomous insect or snake bites—a recommendation that is entirely appropriate. Consistent use typically yields noticeable results.

Realgar typically appears as granules, dense lumps, or powder, with pale orange-red streaks. It is pungent in flavor and warm in nature, entering the Liver and Large Intestine meridians. Its functions include detoxification, insecticidal action, dampness-resolving, phlegm-transforming, and antimalarial effects. It is indicated for abscesses, carbuncles, furuncles, snakebites, abdominal pain due to parasitic infestation, epilepsy, and malaria. It is commonly formulated into pills or powders. For external use, apply an appropriate amount topically to the affected area. Internal use requires caution; prolonged administration is not recommended, and it is contraindicated during pregnancy.

The adverse effects of realgar stem primarily from its high toxicity—especially when consumed frequently or in large doses. Individuals using realgar must therefore exercise heightened vigilance in daily life. Improper dosage or administration method may readily lead to poisoning. As indicated by its chemical formula, As4S4, realgar contains substantial amounts of arsenic—the principal source of its toxic side effects. We hope this explanation proves helpful!