Educational information, not medical advice — ask your doctor or midwife.
Tan Xiang is the sweet-smelling heartwood of the sandalwood tree (Santalum album). It is also known simply as Sandalwood. Chinese medicine uses it to ease chest and upper-belly pain that feels cold, tight or blocked.
In a Chinese formula it is usually a small, scented helper herb. It is rarely the main ingredient.
In TCM terms it is said to "move qi", warm the middle and stop pain. In plain words, herbalists reach for it when someone has a cold, gnawing ache below the breastbone. They also use it for belching, or for nausea that eases with warmth.
Here is the honest verdict on the evidence. Sandalwood has a long, well-recorded place in several old traditions. But good human trials of Tan Xiang as a medicine are more or less absent.
A long history of use tells you that people valued it. It does not tell you that the herb works. We say this once here, rather than in every section below.
No one has shown clearly how Tan Xiang works in the body. Its mechanism (the way it acts) is proposed, not proven.
The wood is rich in scented oils. Lab work suggests these oils can relax smooth muscle, the muscle in the gut wall. In cell and animal tests they also calm inflammation (swelling and heat).
A decoction (a simmered water tea) holds only small amounts of these oils. Whether that does anything inside a person has not been tested properly.
A second idea is simply smell. Many people find the scent of sandalwood calming. Part of any effect may come from scent and ritual, not from a drug-like action.
That is not a criticism of the herb. It is what the current evidence supports.
In TCM language, Tan Xiang is warm and acrid (sharp and pungent). It enters the Spleen, Stomach and Lung channels. It is used to unblock stuck qi in the chest and stomach.
That is a traditional way to describe what it does. It is not an account of how the body works.
Tan Xiang is sold in several forms, and they are not the same thing.
Dried heartwood chips or shavings are the classic medicine form. They go into a decoction (a simmered water tea). The oils boil off easily, so the chips are added near the end, in the last five minutes.
Fine powder goes into pills, powders and some ready-made formulas. Granule extracts made for dispensaries are common in clinics today.
Sandalwood essential oil is a separate product. It is for scent and skin use only. It is not the same as the herb, and you should never treat it as a dose you swallow.
Incense sticks and cones are used for scent and ritual. They carry no medicinal dose at all.
Sandalwood has been prized for more than two thousand years across Asia. People used it for incense, carving, ritual and medicine.
Tan Xiang shows up in Chinese herb books from the Tang and Song periods onward. It sits in formulas for cold, painful chest and stomach trouble.
In Ayurveda the same wood is called chandana, a classic cooling remedy. It also turns up in Unani and Arabic medical writing.
More than one old tradition names it as a medicine, so its traditional standing is high.
Wild Santalum album is now heavily over-harvested. India protects it by law. That is why supply is tight and prices are high.
See a doctor if your stomach or chest discomfort lasts more than two weeks, keeps coming back, or gets worse while you take it.
See a doctor promptly if you notice blood in your urine, pain when you pass water, yellowing of your eyes or skin, or a spreading rash.
Call emergency services for chest pain that is crushing or spreading, for breathlessness, or for vomiting blood. Do not wait to see whether a herb helps.
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 Tan Xiang 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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