Educational information, not medical advice — ask your doctor or midwife.
Ortiga is the Latin American name for stinging nettle. The plant on this page is Urtica urens, the small or dwarf nettle. Its close cousin, Urtica dioica, carries the same common name and is often sold in its place.
It is a low weed with toothed leaves and fine hairs that sting the skin. The leaves are dried for tea, cooked as a green, or sold as capsules and tinctures.
People use ortiga for joint pain, hay fever, hair loss, swelling and urinary trouble in older men. In many homes it is simply a spring food and a general tonic.
Here is the honest verdict. Human evidence for Urtica urens itself is very thin. The few real trials used the cousin species, and their results are small and mixed.
Long use in a tradition is not proof that something works. It is also not proof that it is safe.
No one has shown how ortiga works inside the human body. Most of what we know comes from lab dishes and animals.
In test tube studies, nettle extracts lower some chemical signals linked to swelling and pain. Whether that happens in a sore human knee is not established.
In lab tests, compounds from nettle root bind to proteins that carry male hormones. That finding is the basis for the prostate claim. It has not been confirmed in people.
The sting itself is plain chemistry. The hairs act like tiny needles. They inject histamine and other irritants that cause the burn and the welts.
In animal studies, nettle appears to raise urine output and lower blood sugar a little. Human results are weak and do not agree with each other.
Nettle leaf is also rich in minerals and vitamin K. Some of its old reputation as a "blood builder" may simply be food value, not medicine.
Dried leaf is the most common form. It is brewed as a tea, known as té de ortiga.
Fresh young leaves are cooked like spinach, in soups and stews. Cooking or drying destroys the sting.
Capsules and tablets hold powdered leaf or root. Root products are aimed at prostate symptoms. Leaf products are aimed at joints, allergy and fluid retention.
Tinctures are alcohol extracts taken in drops. Freeze-dried leaf capsules are the form used in hay fever research.
Shampoos, hair rinses and creams carry nettle extract. These are cosmetic products in most countries.
Some folk users still strike sore joints with the fresh plant. This causes real stings and welts. Good evidence does not support it.
Nettle is also sold as a bulk herb in markets across Mexico, Peru and the Andes. Bulk herbs are not tested for strength or purity.
Nettle has a long record on both sides of the Atlantic. European settlers and the plant itself travelled to the Americas, where it took root as a weed and a market herb.
In Latin American folk practice, healers used ortiga tea as a spring tonic and a "blood cleanser". It was also given for joint pain, gout and swollen legs.
Hair loss was a steady use. Nettle rinses were poured over the scalp to thicken hair and ease dandruff.
In parts of Mexico and the Andes, bundles of fresh nettle were brushed on aching backs and knees. The sting was seen as drawing out cold or pain.
In Europe, nettle was a food, a fibre crop and a medicine for the same complaints. German authorities later listed nettle leaf for joint pain and urinary flushing.
These records describe what people did. They do not show that the plant treated the diseases named.
Stop ortiga and get emergency help now if you have swelling of the lips, tongue or throat, a spreading rash, or trouble breathing.
Stop it and call your doctor if you have:
Shakiness, sweating or confusion, which can mean low blood sugar.
Dizziness or fainting when you stand up.
Blood in your urine, pain passing urine, or trouble starting the stream.
Swollen legs that do not settle, or sudden weight gain.
A nettle rash that lasts more than 24 hours, or skin that blisters.
Also check in with your doctor if your symptoms have not improved after two weeks.
In the United States, nettle is sold as a dietary supplement and a food. It is not approved there to treat any disease.
In Germany and much of Europe, nettle leaf and root are accepted traditional herbal products. Across Latin America it is sold freely as a market herb and a food.
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.
One email with the summary. We'll also send a short weekly evidence update — unsubscribe any time.
