Educational information, not medical advice — ask your doctor or midwife.
Tumbavaqueros is the root of Ipomoea stans, a Mexican plant in the morning glory family. The name means roughly "it knocks cowboys down". It is sold in Mexican herb markets as dried root, and also as tinctures and capsules.
Folk healers in central Mexico used it mainly for the nerves. It was given for fits, fright, poor sleep and body aches. In larger amounts the root acts as a strong laxative.
Here is the honest verdict. Nearly all of the research sits in mice, rats and test tubes. Traditional use is long-standing, but that is not proof that it works or that it is safe.
This page gives no dose and no recipe. There is no tested amount for people, and the root can purge the gut hard.
The short answer: no one has shown how it works in a person.
In mice and rats, root extracts have cut the number of drug-induced seizures. The same animal work reports calm, sleepy behaviour at higher amounts. These are animal findings, not human results.
In lab tests on strips of blood vessel, extracts relaxed the vessel wall. That hints at a blood pressure effect. Whether this happens in someone drinking the tea is unknown.
The laxative effect is the best understood part. The root holds resin glycosides, sticky plant compounds that irritate the gut lining. That irritation speeds the bowel and can bring cramps and watery stools.
Note that an effect in a rat is not an effect in you. Dose, body size and the way the body breaks a plant down all differ. Nothing here has been tested in a controlled human trial.
You will most often meet it as loose dried root, sold by weight.
Common forms: - whole or chopped dried root - a decoction, meaning root simmered in water - alcohol tincture, sold in drops - capsules of powdered root - mixed herbal blends sold for nerves or sleep
Most of these products are not standardised. That means the label does not tell you how much active compound is inside. Two bottles of the same brand can differ.
Products bought abroad or online may not list the plant part used. Root, leaf and seed are not the same thing. Morning glory seeds from related species carry their own risks and are not what tradition used here.
Healers in central and southern Mexico used tumbavaqueros root for generations. Written records come mostly from ethnobotanists working from the early 1900s on.
The root was reached for in cases of fits and "nervios", a folk term for nervous upset. It also appeared in remedies for fright, insomnia, back and kidney pain, and swollen joints.
It had a second, blunter role as a purge. Healers used it to clear the bowel, and that use shows up in several regional plant lists.
The name itself is a warning worth hearing. A plant said to knock a grown cowboy down was never treated as a gentle daily tonic.
Stop taking it and get medical help the same day if you have: - diarrhoea that lasts more than a day, or any blood in the stool - severe or lasting belly pain - vomiting that stops you keeping fluids down - muscle weakness, cramps or an irregular heartbeat (arrhythmia) - fainting, confusion, or very little urine
Call emergency services for chest pain, a racing or pounding heartbeat, or collapse.
If you have epilepsy and your seizures change in any way, contact your epilepsy team at once.
Tumbavaqueros is not an approved medicine in the US, the UK or the EU, and is sold there only as a herbal supplement, which regulators do not check for effect before sale. In Mexico it is traded openly as a traditional herb in markets and herbal shops.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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