Herb library · Herb · Gentiana lutea
Gentian
An intensely bitter root from the mountains of Europe, taken before meals for appetite and indigestion. Its European use rests on long-standing tradition; clinical trials have not tested it.
Traditional use
The root of this yellow-flowered gentian of the Alps and Pyrenees has long been one of Europe's classic bitters, taken before meals. The European Medicines Agency accepts gentian root teas, tinctures and extracts for temporary loss of appetite and mild indigestion on the basis of long-standing use alone. In Switzerland the root was also fermented and distilled into a bitter liquor.
Traditional energetics
Galenic (hot or cold, dry or moist)
Hot. Culpeper's Complete Herbal (1814), p. 222 (opens in a new tab)
What studies show
- Insufficient
Appetite and indigestion: there is not enough evidence from clinical trials. The EMA considered one observational study of 205 people with mild stomach and gut complaints; symptoms improved, but with no comparison group no firm conclusion could be drawn. Its European use rests on long-standing use.
Be careful of
Cautions
- NoteNo side effects had been reported when the EMA assessed it. Do not use it if you are allergic to gentian.
- ConditionNot recommended for children and teenagers under 18, for lack of data. See a doctor if symptoms last longer than 2 weeks or get worse.
- PregnancySafety in pregnancy and breastfeeding has not been established, and the EMA does not recommend it then.
- AmountTinctures and liquid extracts contain alcohol. Tests for effects on reproduction, genes and cancer have not been done, and some of its constituents gave positive results in a laboratory mutation test.
- Ask a clinicianTalk with a clinician or pharmacist before using this if you take prescription medicines, are pregnant or breastfeeding, or are giving it to a child.
From the old books
What herbals and dispensaries of the past printed. History, in their words.
“When taken in large doses it is apt to oppress the stomach, irritate the bowels, and even produces nausea and vomiting, as well as fullness of pulse and headache.”
“Flückiger (Pharmacognosie, 1891), states that as a consequence of this use, the plant has almost disappeared from some parts of Switzerland.”
Sources
- European Union herbal monograph on Gentiana lutea L., radix (opens in a new tab) · EMA · read September 25, 2026
- Gentian root: summary for the public (opens in a new tab) · EMA · read September 25, 2026
Reviewed September 25, 2026.