What is Christmas bush (gyama)?

Christmas bush is a West African shrub whose leaves are used for loose stools, sore mouths and skin wounds. Its botanical name is Alchornea cordifolia. In Ghana it is known in Twi as gyama.

The plant is a sprawling shrub of riverbanks and forest edges. Healers use the leaves most often. Root, stem bark and young shoots are also used.

Here is the honest verdict. Nearly all the research sits in test tubes and in rodents. There are no good trials in people, so no benefit is proven.

Long use in a tradition tells you that people valued the plant. It is not proof that it works. It is also not proof that it is safe.

How does Christmas bush (gyama) work?

No one has shown how this plant acts in the human body.

The leaves hold a lot of tannins. Tannins are astringent, which means they make soft tissue draw tight and weep less. That is the usual reason given for the old use in diarrhoea.

In test tubes, leaf extracts slow the growth of several bacteria and fungi. Some of these germs are linked to gut and skin infections. Whether this happens on a person is not established.

In rodents, leaf extracts have slowed gut movement and reduced swelling. In dish tests, some extracts slow the malaria parasite. Results in dishes and animals often fail to carry over to people.

The plant also holds alkaloids, which are strong plant chemicals. Their effects in people have not been mapped. That is one reason this page treats the plant with care rather than confidence.

What forms does Christmas bush (gyama) come in?

Most traditional use is a water brew of fresh or dried leaves.

Common forms include:

A leaf decoction, meaning leaves boiled in water and strained.

Crushed fresh leaf laid on wounds and sores.

A cooled brew used as a mouth rinse or gargle.

Chewing sticks cut from the stem.

Dried leaf powder, sold loose or in capsules.

Tinctures and mixed herbal tonics sold online.

Strength is not fixed in any of these forms. A capsule label and a home brew are not comparable. Mixed tonics raise an extra problem, since you cannot tell how much of each plant is in them.

Where it comes from:

Christmas bush has a long record across West and Central Africa, including Ghana, Nigeria, Cameroon and the Congo basin. Written records of its use go back to colonial-era plant surveys. Oral use is older.

Healers used leaf brews for diarrhoea and dysentery, which means bloody diarrhoea. Crushed leaves were laid on wounds, boils and ulcers. Cooled brews were used as gargles for sore throats and mouth sores.

Other past uses included coughs, chest pain, fevers, and complaints of the womb. In some areas it was given to bring on labour. Modern readers should not copy that use.

The English name comes from the plant's red leaves and fruit late in the year.

What does Christmas bush (gyama) help with?

• Diarrhoea and dysentery (bloody diarrhoea): This is the main traditional use. Healers gave leaf brews to firm up stools and settle cramps. In rodents, leaf extracts slowed gut movement and reduced fluid loss. In test tubes, extracts slowed some gut bacteria. No controlled trial in people backs this up. Bloody diarrhoea, or diarrhoea with fever, needs medical care. The same goes for diarrhoea in a baby, a young child or an older adult. Fluid loss is the real danger, and a herbal brew does not replace rehydration salts.
• Mouth ulcers and sore throat, as a rinse: Cooled brews were used as a gargle for raw mouths and throats. Chewing sticks from the stem were used on gums. Tannins are astringent and may make a sore surface feel tighter and less raw. That effect is short and is not healing. Lab tests show the extracts slow some mouth bacteria, but this has not been tested as a mouthwash in people. A mouth sore that lasts more than two to three weeks should be looked at by a doctor or dentist.
• Wounds, boils and skin sores: Crushed leaf was a common dressing across the region. In rats, leaf extracts sped up wound closure in a few small studies. In dishes, extracts slow bacteria and fungi linked to skin infection. Human wound-healing trials are lacking. Plant material from the ground is not sterile. Putting it on a deep, dirty or spreading wound can make matters worse. Red streaks, swelling, pus or fever mean you need medical care, not a poultice.
• Coughs and chest complaints: Leaf brews were drunk for coughs, chest pain and breathlessness in several West African settings. There is very little research here. Some animal work suggests a calming effect on inflamed tissue. Nothing shows a benefit for coughs or asthma in people. A cough with blood, weight loss, night sweats or breathlessness needs a doctor. These can be signs of tuberculosis or other serious illness.
• Fever and malaria, in tradition only: The plant appears in many regional surveys of antimalarial remedies. In dish tests, some extracts slow the malaria parasite. That is a long way from treating a person. There is no trial showing that it clears malaria in people. Malaria can kill within days. Do not use this plant in place of a tested antimalarial drug and a blood test.
• Period and childbirth uses, in tradition only: Some healers used the plant for period pain, and some gave it in labour to speed delivery. That history is a warning, not a recommendation. It suggests the plant may act on the womb. No one has studied this safely in pregnant women. For this reason, pregnancy is a firm reason to avoid the plant in any form taken by mouth.

Which foods are rich in Christmas bush (gyama)?

This is a medicinal shrub, not a food. The leaves are not eaten as a vegetable in any common dish.

What are the side effects of Christmas bush (gyama)?

• Nausea and stomach upset
• Cramping or, oddly, worse diarrhoea in some people
• Constipation with heavy or repeated use
• A very dry, puckering feel in the mouth
• Dark stools
• Poor iron uptake, which matters most if you are anaemic (low in red blood cells)
• Skin irritation or rash where leaf is laid on skin
• Reports of liver or kidney strain in animals given large doses over time

Good to know:

The common effects are gut effects, and they are usually mild and brief.

The serious concerns come from animal work, not from careful human safety studies. That gap is the point. Nobody has tracked a group of people taking this plant and checked their blood work.

Stop using it if you feel unwell, and get checked. Yellow skin or eyes, dark urine, or pain under the right ribs need urgent attention.

How much Christmas bush (gyama) should you take?

• Recommended daily: This page gives no dose, and that is a deliberate choice. No human trial has tested any amount of this plant. There is nothing to base a figure on. Capsule labels that do carry numbers are not backed by trials in people. Strength also swings between batches. A home brew from fresh leaves and a dried capsule are not the same thing. Guessing a swap between them is not safe.
• Best time of day: There is no evidence that the time of day changes anything. No study has compared morning with evening use.
• With or without food: A strong, bitter brew can upset an empty stomach, so many people take it with food. Tannins bind iron in the gut. If you eat iron-rich meals or take iron tablets, keep them well apart from this plant. Two hours apart is the usual gap suggested for tannin-rich drinks such as strong tea.
• Time to effect: Nobody can give an honest number here, because no trial has measured it. Traditional reports describe a settling of loose stools within a day or two. Those reports are not controlled, and diarrhoea often settles on its own. It may also do nothing at all. That is a real possible outcome with this plant.
• How long to take it: Traditional use was short, often a few days for a specific problem. Daily use over weeks or months has not been studied in people. A steady high intake of tannins is linked to gut irritation and poor iron uptake. Animal studies using large doses over time have shown strain on the liver and kidneys. If a problem has not settled within two or three days, that is a reason to see a doctor, not to carry on longer.