Bay Leaf
Laurus nobilis
T Traditional useA Mediterranean herb that flavours food. Traditionally used for indigestion and wind; effects on blood sugar come only from small early studies.
Image: Herbadex Botanik Stüdyosu · Özel Üretim
On this page
At a glance
Bay leaf is the dried leaf of the Mediterranean bay laurel (Laurus nobilis) and contains essential oil, mainly 1,8-cineole. It is traditionally used for indigestion and wind. One small, short human study reported favourable effects on blood sugar and cholesterol, but the finding has not been confirmed.
Updated: October 15, 2026
ℹ Compiled from standard pharmacognosy references and clinical literature summaries where no formal EMA monograph exists.
What is it used for?
T Traditional use
Traditional use: Based on at least 30 years of documented traditional use rather than clinical trials.
How do we rate evidence levels? →Traditionally used for indigestion, bloating and wind. [1]
C Laboratory / animal evidence
Laboratory / animal evidence: Based only on laboratory (in vitro) or animal studies; not clinically proven in humans.
How do we rate evidence levels? →Small early studies reported favourable effects on blood sugar and cholesterol; not confirmed. [1]
How is it used?
Safety & interactions
- Do not swallow whole leaves: their stiff edges can lodge in the throat or bowel.
- Do not drink bay essential oil.
- Large amounts may affect blood sugar in people on diabetes medicines.
Drug interactions
| Medicine / substance | Effect | Severity |
|---|---|---|
| Diabetes medicines | Large amounts may affect blood sugar. [1] | Minor |
| Sedatives | Large amounts may add to drowsiness (theoretical). [1] | Minor |
Side effects
- Allergic contact dermatitis (bay oil)
⚕ When to see a doctor
- If high fever, shortness of breath or purulent/bloody phlegm develops
- If symptoms do not improve within 1–2 weeks or worsen
- If severe abdominal pain, jaundice, rash or allergic reaction occurs
Did you know?
In ancient Greece, winners of the Pythian Games were crowned with bay laurel; the word "laureate" comes from it. [1]
Frequently asked questions
What is bay leaf tea used for?
It is traditionally drunk for indigestion and wind; the effect has not been clinically shown.
Is burning bay leaves harmful?
The smoke can irritate the airways; do not burn them indoors.
Can bay leaves be eaten?
Not whole; remove them after cooking.
Sources
- Trease and Evans Pharmacognosy (16th Edition)Elsevier Health Sciences · 2009
Cite This Page
Bay Leaf (Laurus nobilis). Herbadex — Doğal Şifa Rehberi (2026). https://herbadex.com/en/herb/bay-leaf/
Related guides and comparisons
Related herbs
Cumin
B Limited clinical evidenceCuminum cyminum
An essential spice for meatballs and pulses. Small clinical studies saw mild benefit for bloating, IBS symptoms and weight control.
Sumac
B Limited clinical evidenceRhus coriaria
A sour, red spice. Small clinical studies reported modest improvements in blood sugar and cholesterol in type 2 diabetes.
Bitter Melon in Olive Oil
B Limited clinical evidenceMomordica charantia
A folk remedy of bitter melon steeped in olive oil. Small studies saw a modest fall in blood sugar; it has not been shown to heal ulcers.
Coriander
T Traditional useCoriandrum sativum
A spice used both as seed and leaf. The seed is traditionally used for indigestion, wind and bloating; blood sugar effects are seen only in animals.
Cajun Seasoning
T Traditional useCapsicum annuum, Piper nigrum, Allium sativum
A Louisiana-style blend of cayenne, black pepper, garlic, onion and thyme. It flavours food; any health effect comes from its spices.
Isot Pepper
T Traditional useCapsicum annuum
A hot pepper from Urfa, darkened by alternately sun-drying and "sweating" it. Contains capsaicin; its effects on metabolism and appetite are small.
Other herbs in the same preparation form (Dried Herb & Tea)
Dried Herb & Tea →
Echinacea
A Strong clinical evidenceEchinacea purpurea
Juice pressed from fresh echinacea plants may help with short-term prevention and treatment of colds. Dried echinacea tea is not covered.
Psyllium Husk
A Strong clinical evidencePlantago ovata
Taken with plenty of water, psyllium husk helps soften stools in constipation; keep a gap between it and other medicines.
Senna
A Strong clinical evidenceSenna alexandrina
A stimulant laxative for short-term relief of occasional constipation. No longer than 1 week; not for children under 12, in pregnancy or while breastfeeding.
St. John's Wort
A Strong clinical evidenceHypericum perforatum
St John's wort extract may help with mild to moderate depressive episodes, but it seriously interacts with many medicines, including the pill.
