Greek sage

What is Greek sage?

Greek sage is a small grey-green shrub from the eastern Mediterranean. Its dried leaves are brewed as a warm, slightly bitter tea. In Greece the plant and the tea are both called faskomilo.

People have long drunk it for sore throats, coughs, colds and an upset stomach. It is also used in cooking, much like common sage. The two plants are close relatives and are often mixed in trade.

The honest verdict on evidence is simple. Greek sage has a long record of use, but very few human trials. Long use is not proof that it works, and it is not proof that it is safe.

Most of what is sold is plain leaf tea, which is treated as a food in Europe. The essential oil is a different product. It is strong, it is for scent and skin products, and it is not a drink.

How does Greek sage work?

No one has shown how Greek sage works in people. Almost all the findings come from lab benches, not patients.

The leaf holds aromatic oils and plant acids. In test tubes, these slow the growth of some bacteria and fungi. Whether that happens in a real sore throat is not established.

In cell and animal studies, rosmarinic acid and carnosic acid appear to damp down inflammation. They also mop up free radicals in those settings. These are early signals, not proof of a health effect.

Extracts of sage species block an enzyme called cholinesterase in test tubes. That enzyme breaks down a brain signal tied to memory.

Some memory drugs act this way. Sage tea is not a drug, and it has not been shown to do the same in people.

Part of the comfort may be simple. A warm drink coats the throat and loosens mucus. That feels better, but it does not treat the cause of the illness.

What forms does Greek sage come in?

Loose dried leaf for tea is the usual form.

- Loose leaf or tea bags, brewed hot - Whole dried leaves used in cooking - Throat gargles, sprays and lozenges that list sage - Tinctures and liquid extracts in alcohol - Capsules of powdered leaf or dry extract - Sage honey and herbal syrups - Essential oil, for scent and skin products only

The tea is mild. Tinctures, extracts and capsules are much stronger per dose.

The essential oil is the one to treat with respect. It is not a food, and it should not be swallowed.

Where it comes from:

Sage was prized in Greek and Roman writing, and faskomilo tea became a household drink across Greece and Cyprus. Village use was mainly for throat and chest complaints.

Folk healers also brewed it for stomach upset, painful periods and heavy sweating. Nursing mothers were sometimes given sage to slow milk flow. Some traditions used it as a mouth rinse for sore gums.

It was also burned or hung for its scent and kept as a kitchen herb. None of this history was tested by trials at the time. It records what people did, not what the plant was shown to do.

What does Greek sage help with?

• Sore throat: This is the main folk use, as a warm drink or a gargle. Small trials of sage sprays, mostly using common sage, report some short-term easing of throat pain. Greek sage itself has barely been tested this way. A warm gargle may soothe, but it does not treat an infection.
• Coughs and common colds: Village practice was a hot cup with honey and lemon at the first sign of a cold. There are no good human trials showing it shortens a cold. The warmth and the honey likely do much of the work.
• Mouth and gum soreness: Cooled sage tea was used as a mouth rinse for sore gums and mouth ulcers. Lab work shows sage extracts slow some mouth bacteria. Human proof is thin, and it is no substitute for dental care.
• Mild indigestion and gas: Bitter aromatic herbs have a long record for a heavy stomach. Greek sage was taken after rich meals. Human studies on this use are lacking, so treat it as comfort rather than treatment.
• Heavy sweating and hot flushes: Sage has an old name for drying sweat, including sweat at night. A few small, short studies on common sage extracts report fewer hot flushes. The studies were weak, and several were funded by product makers. Greek sage has not been shown to do this.
• Memory and alertness: Sage species block a memory-linked enzyme in test tubes. Small trials of other sage species hint at short-term gains in attention in healthy adults. Results are mixed and the effects were small. There is no evidence that sage treats dementia.

Which foods are rich in Greek sage?

Greek sage is a herb, not a nutrient, so no food is a source of it apart from the plant itself. It appears as a kitchen herb in Greek and Cypriot cooking, and in herbal tea blends. Amounts used in cooking are small and are not a concern for most people.

What are the side effects of Greek sage?

• Dry mouth
• Bitter taste that lingers
• Nausea or stomach upset
• Mouth or lip irritation from strong gargles
• Skin rash or itching in people allergic to mint-family plants
• Dizziness after large amounts of strong extract
• A fast heartbeat (tachycardia) after large amounts of strong extract
• Seizures, reported only with sage essential oil taken by mouth

Good to know:

Ordinary leaf tea is well tolerated by most adults. Side effects are usually mild and settle when you stop.

The serious reports almost all involve sage essential oil swallowed by mouth, or very strong extracts used for a long time. Thujone is the problem compound. In high amounts it can trigger seizures.

Children are more at risk than adults because of their size. Keep sage oil locked away.

Stop and get advice if you feel dizzy, sick or oddly fast-hearted after taking it.

How much Greek sage should you take?

• Recommended daily: Greek sage tea is sold as a food-style herbal drink, not a medicine. Packs often list about 1 to 2 grams of dried leaf per cup. Many also suggest no more than about three cups a day. That is what labels carry. It is not a plan for you. Tinctures, capsules and extracts are far stronger. Follow the label on the exact product, and check with a pharmacist first. Sage essential oil is concentrated. Labels for it are for external use only. It is not for drinking. The right amount for you depends on your age, your health and your medicines. Ask a doctor or pharmacist before using anything stronger than ordinary tea.
• Best time of day: Timing does not matter much for the tea. Most people drink it when their throat hurts or after a meal. For night sweats, folk practice was a cup in the evening. There is no trial showing that timing helps. It holds no caffeine, so it will not keep you awake.
• With or without food: Food makes little difference to the tea. Many people drink it after eating, for a heavy stomach. If plain tea upsets your stomach, take it with food. Capsules and tinctures are often easier with a meal. Tannins in the tea can block iron from food and iron pills. Leave a two-hour gap if you take iron.
• Time to effect: A warm gargle or cup may soothe a sore throat within minutes. That relief fades as the drink cools. For stomach comfort, people usually notice something the same day or not at all. Claims about sweating or memory would need weeks, and are not well supported. Be ready for it to do nothing. If a problem is getting worse, see a doctor rather than waiting.
• How long to take it: Short runs are the norm. For a sore throat, a few days to about a week is typical. European guidance for the related common sage suggests reviewing use after one to two weeks. The reason is thujone, which can build up with strong, long use. The mild tea is drunk daily by many people in Greece. Strong extracts and tinctures are a different matter, and are not meant for months on end. If your symptoms are not improving after about a week, stop and get checked.