What is Gambian tea bush?

What is Gambian tea bush?

Gambian tea bush is a scented shrub from West Africa. Its dried leaves are brewed into a mint-like, caffeine-free tea. The botanical name is Lippia multiflora.

In Ghana it is known in Twi as saa nunum. It grows wild in savannah country from Senegal to Cameroon. Some farms now grow it for leaf and for its oil.

People drink it as a daily beverage and as a home remedy. Common home uses are for colds, fevers, upset stomach, poor sleep and high blood pressure.

Here is the honest verdict. Long use in a tradition is not proof that a plant works, and it is not proof that it is safe. Human evidence for this plant is thin, and most findings come from lab and animal work.

How does Gambian tea bush work?

How is it thought to work?

No one has shown clearly what it does in the human body. The proposed actions come from test tubes and animals.

In animal studies, leaf extracts have lowered blood pressure. They also relaxed the walls of blood vessels. Whether a cup of the tea does this in people is not established.

In mice, extracts had a calming effect and lengthened sleep. This fits the traditional use as an evening drink. It is not proof of a sedative effect in humans.

In laboratory tests, the leaf oil slows the growth of some bacteria and fungi. Lab work also points to antioxidant activity. These results sit in a dish, not in a person.

What forms does Gambian tea bush come in?

How is it sold?

Most often it is sold as a plain leaf tea. You may also find it as a scented oil for perfume and insect repellent.

Common forms: - dried loose leaf for brewing - tea bags, sometimes blended with lemongrass or mint - fresh leaf, used at home in West Africa - powdered leaf in capsules, less common - essential oil, for scent and skin products only

The essential oil is very concentrated and is not a drink. Liquid extracts and tinctures exist but are rare outside the region.

Where it comes from:

What did tradition claim?

Across West Africa the leaf was brewed as both a social drink and a home remedy. Writers recorded its use in Ghana, Côte d'Ivoire, Nigeria, Burkina Faso and The Gambia.

Healers used the hot infusion for fevers, including fevers blamed on malaria. It was also given for coughs, colds, blocked noses and stomach pain.

An evening cup was taken for restlessness and poor sleep. Elders also drank it for what they called high blood.

From the 1970s onward, researchers in Ghana and Côte d'Ivoire studied it as a local tea crop. That work looked mainly at the oil and at animal effects. These records describe custom and early research, not a reason to self-treat.

What does Gambian tea bush help with?

• Mild high blood pressure (traditional use): This is the best-known claim, and the evidence is still weak. In animals, leaf extracts lowered blood pressure and relaxed blood vessels. A few small human reports from West Africa suggest modest drops in readings. They were small, short and poorly controlled. No large, well-run trial has tested it. High blood pressure usually has no symptoms and can damage the heart and kidneys. Treat the tea as unproven, and keep taking any medicine your doctor prescribed.
• Trouble sleeping and restlessness: Tradition used an evening cup to settle the nerves and help sleep. In mice, extracts had a calming effect and lengthened sleeping time. There are no good human trials for sleep. Any benefit you notice may come from the warm drink and the routine. If you feel drowsy after it, do not drive.
• Colds, blocked nose and cough: The steam and the minty oil may make a blocked nose feel clearer. That is a comfort effect, not a cure for the infection. The oil contains 1,8-cineole, which has been studied in other plants for airway symptoms. That work was not done with this tea. Human evidence here is missing.
• Fever (traditional use): Healers brewed the leaf for fever, often where malaria was common. Some lab work shows activity against malaria parasites in a dish. That is not treatment. Malaria can kill quickly and needs a test and proper drugs. Do not use this tea in place of medical care for any fever.
• Upset stomach and gas: The tea was drunk after meals for cramps, bloating and wind. Aromatic teas of this kind often feel soothing. No human trial has tested this plant for digestion. The evidence is tradition plus the general comfort of a warm drink.
• A caffeine-free daily hot drink: This is the use with the least doubt attached. The leaf makes a pleasant, caffeine-free infusion. As a drink it is treated as a food in its home region. That says nothing about treating any illness.

Which foods are rich in Gambian tea bush?

This is a plant you brew, not a nutrient found across foods. The leaf itself is the food use, drunk as a caffeine-free tea. It is sometimes blended with lemongrass or mint for flavour.

What are the side effects of Gambian tea bush?

• Drowsiness or feeling dull
• Dizziness or lightheadedness, especially on standing
• Mild stomach upset or nausea
• Skin rash or itch, in people allergic to the plant family
• Mouth or throat irritation from strong brews
• Lower iron absorption with heavy daily tea drinking

Good to know:

How common and how serious?

As an ordinary tea it is usually well tolerated. Most reported problems are mild and settle when you stop.

The effects worth watching are drowsiness and dizziness. Both matter more if you already take medicine for blood pressure or sleep.

Serious reactions are not well documented, but that is partly because nobody has studied it closely. Absence of reports is not the same as proof of safety. Stop and get advice if anything feels wrong.

How much Gambian tea bush should you take?

• Recommended daily: What do packs usually say? Tea packets commonly suggest about 1 to 2 grams of dried leaf per cup. Many labels suggest no more than 2 to 3 cups a day. That is what labels carry. It is not a dose for you, and it is not a treatment plan. There is no tested medicinal dose for this plant. The essential oil is not for swallowing at any amount.
• Best time of day: When is it usually taken? Tradition favours the evening, because of its calming reputation. That reputation rests on animal work, not human trials. If you find it makes you sleepy, keep it to the evening. If it does not, the timing does not matter much.
• With or without food: With food or without? Either is fine. Some people drink it after meals for comfort. Tea tannins can cut how much iron you absorb from a meal. If you have low iron, leave a gap of an hour or two around iron-rich food and iron tablets.
• Time to effect: How fast would you notice anything? Warmth and a clearer nose may be felt within minutes. That is the drink, not a drug effect. For sleep or blood pressure, no reliable timeline exists. It is honest to say it may do nothing at all.
• How long to take it: How long do people use it? In West Africa it is drunk on and off for years as a beverage. No study has checked what long daily use does. If you are drinking it for a health problem, keep the period short. Then review it with your doctor rather than carrying on by habit.