Rosemary
Salvia rosmarinusIn ancient Greece it was the symbol of memory; students are said to have worn it in their hair for exams. Shakespeare uses it this way in Hamlet.

What is Rosemary?
Rosemary (Salvia rosmarinus) is a plant of the Lamiaceae family. Traditions that use it: Anatolia and the Mediterranean, Andes. Part used: leaves, flowering sprigs.
What is Rosemary used for?
Traditional use: A hedge and garden plant on the Mediterranean coast. Scientific evidence: traditional. The EMA recognises rosemary for mild digestive complaints and, externally, for muscle and joint pain as traditional uses.
Is Rosemary safe?
Safety label: generally safe. Safe in culinary amounts. High-dose oil is not recommended in epilepsy or pregnancy.
Traditional use
A hedge and garden plant on the Mediterranean coast. Its oil is rubbed in for hair loss and sore muscles; its tea is drunk for digestion.
In Peru, romero is used in limpia incense and in bath water to drive away bad energy.
In nature
Mix-up risk
Can be confused with lavender leaves. Rosemary leaves are darker green, stiff and needle-like.
Preparation
Brewed as tea; the oil is diluted and rubbed in.
What science says
The EMA recognises rosemary for mild digestive complaints and, externally, for muscle and joint pain as traditional uses. There are small studies on memory; results are inconclusive.
How strong is the evidence?
Claims often repeated online about Rosemary, and what science says today.
| Claim | Evidence | Note |
|---|---|---|
| Helps mild indigestion | Traditional only | Recognised by the EMA as traditional. |
| Used externally for muscle and joint pain | Traditional only | Recognised by the EMA as traditional. |
| Improves memory | Limited evidence | Small studies with its scent and low doses; inconclusive. |
| Grows hair | Limited evidence | In one small study, rosemary oil matched a hair-loss drug; not confirmed. |
Common mistakes
- Putting the essential oil on the skin undiluted or drinking it.
- High doses in people with epilepsy.
- Therapeutic doses in pregnancy (amounts in food are fine).
Frequently asked
How do I use rosemary oil on hair?
Dilute a few drops in a carrier oil such as olive oil and apply to the scalp. Test on a small patch first for allergy.
Can I drink rosemary tea every day?
Moderate amounts are considered safe; people on blood pressure or diabetes medicine should ask their doctor.
Does rosemary improve memory?
There are interesting but small studies; no clear effect has been shown.
Safety
Safe in culinary amounts. High-dose oil is not recommended in epilepsy or pregnancy.
Similar plants
Sources
- EMA monographRosmarini folium: European Medicines Agency herbal assessment
- ResearchRosmarinus officinalis: fitokimya ve biyolojik etkinlik üzerine güncel derleme
- BookBaytop T. Türkiye’de Bitkiler ile Tedavi: Geçmişte ve Bugün. 2. baskı. İstanbul: Nobel Tıp Kitabevleri; 1999.
- Botanical recordKew Plants of the World Online: Salvia rosmarinus
- Titles of research sources are summarised in Turkish on the Turkish page; links open the original English publications.
Written by Edanaz Tınmazlar · Last reviewed: · Türkçe


