Educational information, not medical advice — ask your doctor or midwife.
Pichi is a dried shrub taken as a tea or extract for urinary and liver complaints. It comes from Fabiana imbricata, a resinous plant of the southern Andes. The leafy twigs are the part used.
The plant grows on dry hills in Chile and Argentina. It belongs to the nightshade family, like tomato and tobacco. Bundles of the dried herb are still sold in markets there.
Here is the honest verdict on the evidence. There are almost no human studies of pichi, so its effects in people are unproven. Long traditional use is not proof that it works, and it is not proof that it is safe.
Most of what is known comes from test tube and animal work. That kind of work can suggest ideas. It cannot tell you what a cup of the tea will do.
No one has shown what pichi does inside the human body. The ideas below come from the lab, not from patients.
Tradition treated pichi as a water pill (diuretic) that made people pass more urine. In animal studies, extracts have shown mild water pill effects. Whether this happens at tea strength in people is not established.
In test tube work, pichi extracts relax strips of smooth muscle. That is the muscle in the gut wall and the urinary tubes. Researchers take this as a hint of an anti-spasm effect, not as proof of one.
In cell studies, the plant's coumarins and flavonoids mop up free radicals. Free radicals are unstable molecules linked to cell stress. Antioxidant activity in a dish often fails to show up in people.
Some animal work points to mild anti-inflammatory and bile-stirring effects. These findings are early and small. They have not been tested in human trials.
There is no accepted explanation for how pichi might help with stones. Claims that it dissolves or breaks up stones are not supported by human evidence.
Pichi is sold mainly as dried leafy twigs for tea.
Common forms include:
Loose dried herb, brewed as an infusion.
Tea bags, often blended with other herbs.
Tinctures and liquid extracts made with alcohol.
Dry extract in capsules or tablets.
Mixed "kidney" or "liver" herbal blends.
Quality varies widely between sellers. Many labels do not say how much herb each dose holds.
Look for the botanical name Fabiana imbricata on the label. Blends may hide other active herbs, so read the full ingredient list.
Pichi has a long record in the folk medicine of Chile and Argentina.
Mapuche and rural healers brewed the dried twigs as a tea. They gave it for trouble passing urine, for gravel and stones, and for sluggish digestion. Dried bundles were a market staple.
The herb reached Europe and North America in the late 1800s. It was listed in some pharmacopoeias and pharmacy handbooks of that era. Doctors of the day described it as a urinary and liver remedy.
Interest faded through the 20th century as modern drugs arrived. Pichi stayed in regional use and in herbal trade. It never gained a modern evidence base.
Stop pichi and see a doctor if your symptoms do not improve within a few days.
Get urgent medical care if you have:
Blood in your urine.
Fever with back or side pain.
Severe pain in the side or belly.
Little or no urine, or sudden swelling.
Yellow skin or eyes.
Rash, swollen lips or face, or trouble breathing.
In the United States, pichi is sold as a dietary supplement. It is not approved as a medicine there.
In the UK and the European Union it is not an authorised herbal medicine, though it appeared in older pharmacopoeias. In Chile and Argentina it is traded openly as a traditional herb.
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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