Other names for xanthium (cockleburs)

Cocklebur
Cang Er Zi (Traditional Chinese Medicine)
Rough Cocklebur

Synopsis of xanthium (cockleburs)

Xanthium—commonly known as cocklebur—refers to the seed and aerial parts of Xanthium strumarium, a weedy annual plant found throughout the world in temperate and tropical regions. In Traditional Chinese Medicine (TCM), it is known as Cang Er Zi and is used primarily for its anti-inflammatory, analgesic, and decongestant properties, particularly in treating sinus and respiratory conditions. The plant contains sesquiterpene lactones (notably xanthinin), glycosides, and toxic alkaloids, which must be handled with care, especially in raw form.

The ripe seed of Xanthium is used in small, prepared doses to relieve nasal congestion, dispel wind-dampness, and alleviate headaches and sinus pain. It is commonly included in TCM formulas for allergic rhinitis, chronic sinusitis, and frontal headaches associated with sinus blockage. It also shows mild antimicrobial and anti-allergic properties in modern pharmacological studies.

Despite its benefits, the plant—particularly the immature seeds and seedlings—can be toxic if improperly prepared. Overconsumption can cause nausea, abdominal pain, and in large doses, liver and kidney damage. As such, traditional preparations carefully dry and process the seeds to reduce their toxicity before clinical use.

Historical Use:
In Traditional Chinese Medicine, Xanthium strumarium (Cang Er Zi) has been used for centuries, especially in treating disorders of the nose and head caused by “wind-cold” or “wind-heat” invasion. It is often paired with herbs like Magnolia flower (Xin Yi Hua) and Angelica dahurica (Bai Zhi) in well-known formulas such as Cang Er Zi San, used to clear nasal obstruction, relieve sinus pain, and expel pus from inflamed sinuses. These formulas date back to the Ming Dynasty and continue to be widely used today.

In North American folk medicine, cocklebur was used by Indigenous peoples and early settlers to treat malaria-like fevers, urinary retention, and skin conditions. Poultices made from the leaves or crushed burs were sometimes applied to swellings or skin irritations. However, due to its potential toxicity, internal use was generally conservative and often limited to seasoned practitioners.

Throughout European herbals, Xanthium was often viewed with suspicion because of its spiny, invasive nature and toxic reputation. Still, it occasionally appeared in formulas intended for arthritis, gout, or rheumatism, especially where "wind-damp" patterns resembled the concepts found in Chinese medicine.

Xanthium (cockleburs) is used for these health conditions

Abdominal Pain (Traditional)
Abrasions (Traditional)
Abscesses (Traditional)
Adenitis (Traditional)
Afterbirth Pain (Traditional)
Arthritis (Traditional)
Asthma (Traditional)
Bites and Stings (Traditional)
Boils (Traditional)
Bronchitis (Traditional)
Bruises (healing) (Traditional)
Cancer (natural therapy for) (Traditional)
Canker Sores (Traditional)
Carbuncles (Traditional)
Chest Pain (Traditional)
Chills (Traditional)
Cholera (Traditional)
Colds (antiviral) (Traditional)
Colds (general) (Traditional)
Colds (prevention) (Traditional)
Colds (with fever) (Traditional)
Colitis (Traditional)
Conjunctivitis (Traditional)
Cuts (Traditional)
Debility (Traditional)
Dermatitis (Traditional)
Diabetes (Traditional)
Diarrhea (Traditional)
Digestion (poor) (Traditional)
Diphtheria (Traditional)
Dizziness (Traditional)
Dysentery (Traditional)
Ear Infection or Earache (Traditional)
Eczema (Traditional)
Edema (Traditional)
Endometriosis (Traditional)
Enteritis (Traditional)
Epilepsy (Traditional)
Eye Infections (Traditional)

xanthium (cockleburs) is used to support these body systems

Eustachian Tubes (Traditional)
Immune System (Traditional)
Respiratory System (Traditional)
Sinuses (Traditional)

Products containing xanthium (cockleburs)