Educational information, not medical advice — ask your doctor or midwife.
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Ilk al-Butm is the sticky resin that bleeds from the trunk of the terebinth tree (Latin name Pistacia terebinthus). It is a single drug of Persian/Unani medicine, also sold as Chian turpentine or terebinth resin. Healers used it as a chewing gum for the mouth and stomach, and as a salve spread on the skin.
In traditional practice it was given for bad breath, weak digestion, coughs with thick phlegm, and slow-healing sores and boils. It is classed as a warming, drying and "cleansing" drug in Unani theory, which is a traditional way of sorting medicines, not a test result.
The evidence verdict is simple and honest: the traditional record is old and wide, but human trial evidence for terebinth resin is essentially absent, so nothing here should be read as proof that it treats any illness. Traditional standing and clinical proof are two different things, and that gap applies to everything on this page.
Nobody has shown in people how Ilk al-Butm works, so what follows is a best guess from laboratory work.
The resin is rich in terpenes, a family of strongly scented plant oils. In test tubes these terpenes slow the growth of some bacteria and fungi, and they behave as mild antioxidants (chemicals that mop up reactive waste molecules inside cells). That may explain the old use on wounds and in the mouth.
When chewed, the resin also makes you produce more saliva and gives a lasting scent, which is a plain physical reason old texts praised it for bad breath. Inhaled or rubbed on the chest, the same volatile oils feel cooling and loosening, much like other pine-type resins. None of this has been tested in a proper human trial, so treat it as an idea rather than a fact.
You will most often meet it as raw resin tears, small hard amber lumps sold loose by weight. These are chewed like gum or dissolved in warm water or oil.
It is also sold as a powder, as an ingredient in traditional ointments and plasters, and as a resin folded into honey or ghee. Some Anatolian markets sell it as a bread and pastry flavouring.
A distilled oil, sold as Chian turpentine or terebinth oil, is a separate and far stronger product. It is meant for external use and for industry, not for swallowing. Do not treat it as interchangeable with the chewable resin.
Terebinth resin is one of the oldest recorded plant medicines around the Mediterranean and the Iranian plateau. Greek and Roman writers, including Dioscorides, ranked it above common pine resin, and Persian and Unani physicians such as Ibn Sina carried that use forward under the name Ilk al-Butm.
It appears in Anatolian, Levantine and Persian folk practice as a chewing resin, a wound salve and a bread flavouring, and in Jewish and Islamic textual traditions as a valued aromatic. That long, cross-cultural record is what earns it a high traditional tier, and nothing more.
See a doctor if a skin rash spreads, blisters or does not settle within a few days after you stop using it, or if a wound you treated becomes hot, swollen or starts to weep.
Get urgent medical help if anyone swallows terebinth oil, or if you have severe stomach pain, repeated vomiting, confusion, a fit, less urine than usual or urine that turns dark or bloody.
Call emergency services straight away for swelling of the lips, tongue or throat, sudden wheezing, or trouble breathing.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
Reviewed by the HealisticMD editorial team How we grade evidence →
The published evidence for Ilk al-Butm is weak or absent. That usually means no controlled trial has tested it, not that a trial found it ineffective — the two are different, and we grade only what has been published.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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