Blessed Thistle

At a Glance

Common name

Blessed Thistle

Scientific name

Cnicus benedictus

Family

Asteraceae

Region

Mediterranean

Plant part

Aerial parts

Caffeine

Caffeine Free

Evidence

Insufficient

Safety review

Safety information on file

Botanical Description

An upright annual with deeply lobed wavy green leaves covered in fine spines and a single yellow thistle-like flower head with spiny bracts; the aerial parts are the part used.

Also known as: Holy Thistle, St. Benedict's Thistle, Cardo Santo

Historical Background

Blessed thistle has been a monastic and European digestive bitter since the Middle Ages, named for its devotional and healing reputation. Its bitter, herbaceous leaves brew a tonic tea traditionally sipped to stimulate appetite and digestion.

Earliest recorded uses: Used in European and monastic traditions since the Middle Ages; a bitter digestive and a Marian devotional herb.

Traditional Uses

These uses document historical traditions and do not imply proven effectiveness.

Flavor & Aroma

Aroma: Bitter, herbaceous, slightly warm

Tea Preparation

Modern Evidence

Blessed thistle has a tradition as a bitter digestive tonic; preclinical work shows antioxidant and antimicrobial activity. Clinical evidence is insufficient; it is not a treatment for indigestion, poor appetite, or any disease, though it remains a classic bitter tonic tea.

Evidence levels describe the state of research for the traditional use discussed here, not a recommendation. Historical use does not imply effectiveness.