What is Jiang Xiang?

Jiang Xiang is the scented heartwood of a tree called Dalbergia odorifera. In Chinese medicine it is used for chest pain, belly pain, and pain after a fall or a blow. The powder was also dusted on small cuts to slow bleeding.

It is a single herb, not a blend. In practice it is most often used as one part of a larger mix. You may see it sold as wood chips, thin slices, or a fine powder.

The human evidence is very thin. Long use in a tradition is not proof that a herb works, and we could not find any human trial of Jiang Xiang on its own. Almost all of what we know comes from lab dishes and animal tests.

How does Jiang Xiang work?

No one has shown how Jiang Xiang works in people. What follows is theory, not proof.

In Chinese medicine it is said to move blood and qi (the body's vital energy), warm the middle, and ease pain. That is a traditional idea, not a lab finding.

In lab and animal work, the oil and the plant pigments in the wood relax blood vessels and calm swelling. Some of the same work points to slower blood clotting. Those results come from dishes and animals, so we cannot say they happen in your body.

What forms does Jiang Xiang come in?

Jiang Xiang comes mainly in these forms:

Thin slices or chips of the wood, boiled into a tea.

A fine powder, stirred into warm water or into a mix of other herbs.

As one herb inside a ready-made Chinese patent pill or granule.

A scented oil, used in incense and perfume. The oil is not meant to be swallowed.

Where it comes from:

Jiang Xiang has been listed in Chinese herb books for many hundreds of years, and was well known by the Ming era (1368 to 1644). The same wood was prized for incense and for furniture.

Healers grouped it with the blood-moving herbs. Its main jobs were easing chest and belly pain, treating hurts from falls and blows, and slowing bleeding from small wounds.

What does Jiang Xiang help with?

• Chest pain and tightness: This is the classic use. Chinese doctors add Jiang Xiang to heart formulas for a tight, aching chest. No human trial has tested the herb by itself for this. Chest pain can mean a heart problem, so it needs a doctor, not a herb.
• Belly pain with poor appetite or vomiting: Tradition treats it as a warming herb for a cold, achy stomach. It was given for belly pain with gas or vomiting. The support here is written custom only. We found no human trial.
• Pain and bruising after a fall or blow: Blood-moving herbs were a first choice for bumps, sprains and bruises, and Jiang Xiang sits in that group. Animal and lab work shows less swelling, but that has not been repeated in people.
• Minor bleeding from small cuts: The dry powder was pressed onto shallow cuts to help bleeding stop. This is an old wound-care habit, used long before modern dressings. There is no trial evidence for it. Use a clean dressing and pressure instead, and see a doctor for a deep or dirty wound.

Which foods are rich in Jiang Xiang?

You cannot get this herb from your diet.

What are the side effects of Jiang Xiang?

• Upset stomach or nausea
• Dry mouth
• Skin rash or itch from handling the wood dust
• Easy bruising or longer bleeding from small cuts
• Allergic reaction (rare, but rosewood dust is a known trigger)

Good to know:

Side effects are thought to be mild and rare, but that is a guess, not a finding. No one has counted them in a trial.

The effect that matters most is on bleeding. If you bruise easily, bleed longer than usual, or see blood in your stool or urine, stop taking it and get medical help.

Workers who cut and sand this wood can get skin and airway irritation from the dust. Handle raw wood in a well-aired room.

How much Jiang Xiang should you take?

• Recommended daily: No safe modern dose has been set, because the herb has not been tested in people. Old Chinese texts and modern herb guides list 3 to 6 grams of the wood a day, boiled into a tea. As a powder, 1 to 2 grams a day is the usual figure. Because the scent boils away, it is added near the end of cooking. Do not raise the dose on your own.
• Best time of day: Usually split into two doses, morning and evening. There is no test evidence that timing changes anything.
• With or without food: Usually taken warm, between meals. If it upsets your stomach, take it with food.
• Time to effect: Unknown. Traditional use aims at pain relief within hours to a few days, but no trial has measured this.
• How long to take it: Short courses only. Chinese practice uses it for days to a few weeks, not for months on end. If your pain has not changed after two weeks, stop and speak to a doctor. Long, steady use has never been studied for safety.