Botanical Overview
Sweet Herb (Lippia dulcis) is a flowering plant in the Verbenaceae family. Traditional medicine systems have documented several valuable applications for this species, supported by its observed therapeutic effects. The verbena family (Verbenaceae) includes herbs, shrubs, and trees with opposite leaves and spikes or clusters of small, tubular flowers with four or five petals. Many species produce aromatic oils in glandular hairs on their leaves and stems.
General Description
Phyla dulcis) is a species of perennial herbaceous plant that is native to southern Mexico, the Caribbean (Cuba, Hispaniola, and Puerto Rico), Central America, Colombia, and Venezuela. It is known by several common names, including Aztec sweet herb, bushy lippia, honeyherb, hierba dulce, and tzopelic-xihuitl (Nahuatl). Its buds are also sold as dushi or dulce (sweet in Papiamento and Spanish respectively) buttons.
Family Context
The Verbenaceae family is widely distributed. Notable medicinal members include:
- Lantana — 59 documented uses
- Vervain — 58 documented uses
- Brazilian Tea — 55 documented uses
- White Lippia — 20 documented uses
Geographic Distribution
Sweet Herb has been recorded in 10 countries and territories worldwide, including Brazil, Colombia, Costa Rica, Cuba, Dominican Republic, and others.
Traditional Uses
Sweet Herb has been traditionally used for digestive health, respiratory conditions, and nervous system disorders, among other applications.
Digestive health.
- Colic
For digestive complaints, the herb is typically prepared as a tea or decoction taken before meals. The bitter compounds stimulate digestive secretions and improve nutrient absorption. Some traditions use the powdered root or leaves in small doses as a stomachic tonic.
Respiratory conditions.
- Bronchitis
- Cough
- Asthma
- Catarrh
- Cold
- Expectorant
- Pectoral
Respiratory conditions are addressed through steam inhalation of the herb’s vapors or internal use as a warm tea. The hot infusion acts as an expectorant, helping to loosen phlegm and clear congestion. Some traditions combine it with honey for coughs.
Nervous system disorders.
- Sedative
Nervous system support involves taking the herb as a warm tea, often in the evening or before bed. The calming compounds interact with neurotransmitter systems to promote relaxation and restful sleep.
Active Compounds
Phytochemical research has identified 4 compounds in this species, including a diverse array of phytochemical classes (see the Complete Chemical Inventory below for the full list).