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Dandelion

Traditionally used for: Constipation; Fever and colds; Skin complaints such as ringworm; Intestinal worms.

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What is Dandelion? Coffee senna is a weedy shrub in the pea family. Its botanical name is Senna occidentalis. In Jamaica it is called piss-a-bed or dandelion; in Cuba, brusca. It is not the true dandelion. True dandelion is Taraxacum officinale, the yellow lawn flower sold in teas. The two share folk names, but they are different plants with very different risks. The honest verdict is blunt. Coffee senna has poisoned livestock, and human poisonings are on record. No human trial supports any medical use of it. Long use in a tradition is not proof that a plant works. It is also not proof that it is safe. This page gives no dose and no recipe, on purpose. How does Dandelion work? Almost everything known about this plant comes from animal and laboratory work, not from people. The plant holds anthraquinones. These are the same class of compounds that make senna a laxative. In the gut they speed up the bowel and draw in water. The harm is better studied than the help. In cattle, goats and poultry, feed rich in the seeds damages muscle and liver tissue. Animal work points to injury of mitochondria, the tiny power units inside cells. In children in India, eating the beans has been linked to a severe brain and liver illness. Some of those cases were fatal. The exact toxin has still not been pinned down. In test tubes, extracts slow some bacteria, fungi and malaria parasites. Whether any of that happens inside a human body is unknown. What forms does Dandelion come in? No form of coffee senna has been shown to be safe, so none is set out here as usable. In Caribbean folk practice the leaves and whole plant were boiled into a bush tea. The same brew was used as a wash or a bath. The roasted seeds were used as a coffee stand-in. That is where the English name comes from. Roasting is not a safety step. Crushed leaves were also laid on the skin as a poultice. Dried herb, loose powder and capsules are sold online today. Labels often fail to say which part of the plant is inside. That matters, because the seeds carry the greatest risk. Where it comes from: Coffee senna travelled with people and settled in as a roadside weed. It likely began in tropical America. Today it grows across the Caribbean, West Africa, Latin America and South Asia. In Jamaican and Cuban bush medicine it held a steady place. Healers reached for it for fever, colds, worms, blocked bowels and skin sores. The local names grew out of that use. Piss-a-bed points to its pull on the bladder and bowel. Brusca is the common Cuban name. Roasted seeds were brewed as a coffee substitute in lean times. Written records of this run back through the colonial period.

Helps

What does Dandelion help with? Constipation: Tradition used the leaf tea to move a blocked bowel. The anthraquinones in the plant are the same type that make licensed senna work, so loose stools are a real effect. That is not the same as a safe remedy. No human trial has tested coffee senna for constipation. Licensed laxatives are tested, dosed and labelled; this plant is not. Fever and colds: Bush teas for fever and chill were a common use in Jamaica and Cuba. There is no human trial behind this. Any drop in fever may simply follow fluid loss from the bowel, which is a harm, not a benefit. Ringworm and other skin complaints: Crushed leaves were applied to ringworm, sores and itchy rashes. In laboratory dishes, extracts slow some fungi and bacteria. Nobody has shown this works on human skin. Cheap, tested antifungal creams are sold in any pharmacy. Intestinal worms: The plant was given to clear worms in both people and animals. Evidence is limited to test-tube and animal reports. There are no human trials. Worm infections can be diagnosed and treated properly by a doctor. Jaundice and 'liver cleansing': Some Caribbean practice used it for yellow eyes and 'bad liver'. This is the most worrying claim on the page. Coffee senna has damaged the liver in animals, and human poisoning cases involved liver failure. Yellow eyes or skin need a doctor, not a bush tea. Malaria-type fevers: It was used in both the Caribbean and West Africa for fevers that look like malaria. Laboratory tests show some activity against malaria parasites. That has never been shown to help a sick person. Untreated malaria can kill, so suspected malaria is an emergency.

Dandelion

Quick Facts

  • What it is: Coffee senna (Senna occidentalis) is a tropical weed used in Caribbean bush medicine, and a known poison to livestock and children.
  • Main uses: Constipation, Fever and colds, Skin complaints such as ringworm, Intestinal worms
  • Active ingredients: Anthraquinones (emodin, chrysophanol, physcion), Dianthrones, An unidentified seed toxin, Flavonoids and tannins, Galactomannan gum
  • Forms: Leaf and whole-plant bush tea, Wash or bath, Leaf poultice, Roasted seed 'coffee', Dried herb, powder and capsules sold online
  • Time to effect: Bowel effects in hours; signs of poisoning may take a day or more.
  • Side effects: Cramps and diarrhoea are common; liver damage, muscle damage and death have been reported.
  • Pregnancy & breastfeeding: Avoid: reported to act on the womb.

Educational information, not medical advice — ask your doctor or midwife.

What is Dandelion?

Coffee senna is a weedy shrub in the pea family. Its botanical name is Senna occidentalis. In Jamaica it is called piss-a-bed or dandelion; in Cuba, brusca.

It is not the true dandelion. True dandelion is Taraxacum officinale, the yellow lawn flower sold in teas. The two share folk names, but they are different plants with very different risks.

The honest verdict is blunt. Coffee senna has poisoned livestock, and human poisonings are on record. No human trial supports any medical use of it.

Long use in a tradition is not proof that a plant works. It is also not proof that it is safe. This page gives no dose and no recipe, on purpose.

How does Dandelion work?

Almost everything known about this plant comes from animal and laboratory work, not from people.

The plant holds anthraquinones. These are the same class of compounds that make senna a laxative. In the gut they speed up the bowel and draw in water.

The harm is better studied than the help. In cattle, goats and poultry, feed rich in the seeds damages muscle and liver tissue. Animal work points to injury of mitochondria, the tiny power units inside cells.

In children in India, eating the beans has been linked to a severe brain and liver illness. Some of those cases were fatal. The exact toxin has still not been pinned down.

In test tubes, extracts slow some bacteria, fungi and malaria parasites. Whether any of that happens inside a human body is unknown.

What forms does Dandelion come in?

No form of coffee senna has been shown to be safe, so none is set out here as usable.

In Caribbean folk practice the leaves and whole plant were boiled into a bush tea. The same brew was used as a wash or a bath.

The roasted seeds were used as a coffee stand-in. That is where the English name comes from. Roasting is not a safety step.

Crushed leaves were also laid on the skin as a poultice.

Dried herb, loose powder and capsules are sold online today. Labels often fail to say which part of the plant is inside. That matters, because the seeds carry the greatest risk.

Where it comes from:

Coffee senna travelled with people and settled in as a roadside weed. It likely began in tropical America. Today it grows across the Caribbean, West Africa, Latin America and South Asia.

In Jamaican and Cuban bush medicine it held a steady place. Healers reached for it for fever, colds, worms, blocked bowels and skin sores.

The local names grew out of that use. Piss-a-bed points to its pull on the bladder and bowel. Brusca is the common Cuban name.

Roasted seeds were brewed as a coffee substitute in lean times. Written records of this run back through the colonial period.

If this is an emergency

Some reactions to Dandelion need urgent care. Call your local emergency number or go to an emergency department straight away — do not wait to see whether it passes.

Who should avoid Dandelion?

  • Never give coffee senna to a child, in any form or amount; children are the group most often killed by it.
  • Never eat the seeds or drink anything made from them, roasted or not.
  • Do not use if you are pregnant; it acts on the bowel and may act on the womb.
  • Do not use if you are breastfeeding.
  • Do not use if you have any liver disease (illness of the liver), hepatitis, or yellow skin or eyes.
  • Do not use if you drink alcohol heavily.
  • Do not use if you take paracetamol (acetaminophen) often, methotrexate, or isoniazid.
  • Do not use if you take digoxin (a heart medicine), water pills (diuretics), or steroid tablets (corticosteroids).
  • Do not use if you have kidney disease.
  • Do not use if you have inflammatory bowel disease (long-term gut inflammation), a blocked bowel, or belly pain you cannot explain.
  • Avoid it entirely if you are frail or elderly, because fluid and potassium loss hit harder.
  • Never feed it to pets or livestock.

When should you see a doctor?

If you or anyone else has swallowed coffee senna, call your local poison centre or emergency number now. Do not wait to see how it goes.

Get emergency help straight away for any of these:

- Vomiting that will not stop - Dark, brown or tea-coloured urine - Muscle pain, weakness, or trouble standing - Yellow skin or yellow eyes - Confusion, extreme drowsiness, or a fit (seizure) - Very little or no urine - Any symptom at all in a child

Take the plant, packet or label with you. It helps the medical team work out what you took.

Is Dandelion legal where you live?

Coffee senna is not approved as a medicine in the UK, the EU, the US, Canada or Australia, and no official safe intake has been set. It is sold in some markets as a raw herb or supplement, and in several countries it is listed as a poisonous plant in animal feed rules.

Options to discuss with a clinician

Do not swap one remedy for another on your own. Ask your doctor or a pharmacist first, especially if you take any regular medicine.

Things they may suggest instead:

- For constipation: more fluid and fibre, or a licensed product such as ispaghula (psyllium) husk, lactulose, or standardised senna leaf tablets used at label strength. - For fever or aches: paracetamol or ibuprofen, if they suit you. - For ringworm or athlete's foot: a pharmacy antifungal cream. - For suspected worms: a stool test and a proper worming tablet from your doctor. - For yellow eyes, dark urine or 'liver trouble': see a doctor the same day. These need tests, not herbs. - For malaria risk after travel: go to a doctor or urgent care at once.

If you wanted true dandelion (Taraxacum officinale) for its mild bitter or water-pill effect, say so clearly when you buy. It is a different plant with a far gentler record, though it is not right for everyone either. Check with a pharmacist before using it alongside water pills or lithium.

Graded pages for the options named above:

  • Psyllium — evidence grade A, traditional tier T3

Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.

The evidence behind this remedy, in one page

What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.

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