Educational information, not medical advice — ask your doctor or midwife.
Track Ambrosia artemisiaefolia with reminders and record whether it helped, in the app.
Ambrosia artemisiaefolia is a homeopathic remedy made from ragweed. Its Latin name is Ambrosia artemisiifolia. It is given as a single drug in homeopathy, not as part of a mix.
Ragweed pollen is a common cause of hay fever. Homeopaths use this remedy for itchy eyes, sneezing and a runny nose in pollen time. It is made by watering ragweed down again and again, so a 30C pill holds no ragweed at all.
Trials in people do not show any effect beyond placebo (a dummy pill). Long use in homeopathy is not proof that a remedy works. This page reports both sides: what the tradition claims, and what the evidence shows.
Homeopathy rests on one idea: a tiny dose of a thing that brings on symptoms may ease those same symptoms. Ragweed pollen brings on hay fever. So homeopaths give ragweed for hay fever.
There is no known way for this to work in the body. A 30C pill holds no ragweed, so nothing is left that could act on your cells.
When people feel better, the likely reasons are simple. Placebo, time, care and attention all help. Pollen counts also drop as the season ends.
Sugar pills and pellets are the most common form. They go under the tongue and melt there. Most shops sell 6C, 30C and 200C strengths.
Liquid drops in water and alcohol are also sold. Some makers offer a mother tincture, which is the undiluted plant extract.
Ragweed is also used in allergy testing and in allergy shots. Those are medical products, not homeopathy, and they are given by a doctor.
Ragweed came into homeopathy in the United States in the 1800s. Doctors there saw that its pollen brought on hay fever each autumn. So they made a remedy from the same plant.
It appears in old homeopathic reference books, mostly for itchy eyes and a streaming nose. It stays a minor remedy. Homeopaths reach for it far less often than big names like Arsenicum or Belladonna.
See a doctor if your hay fever lasts more than two weeks, or if it stops you sleeping or working. Book an appointment if you get a lot of nosebleeds, or ear and sinus pain that will not settle.
Get help straight away if your lips, tongue or throat swell, if you come out in hives all over, if you feel faint, or if breathing becomes hard or wheezy. Use your adrenaline pen if you have one, then call emergency services.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
Reviewed by the HealisticMD editorial team How we grade evidence →
The published evidence for Ambrosia artemisiaefolia is weak or absent. That usually means no controlled trial has tested it, not that a trial found it ineffective — the two are different, and we grade only what has been published.
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.
