Educational information, not medical advice — ask your doctor or midwife.
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Doryphora decemlineata is a homeopathic remedy made from the Colorado potato beetle. Its Latin name is Leptinotarsa decemlineata. Homeopathy books link it to burning, painful urination.
It is given as a single drug, on its own, not as part of a blend. The beetle is diluted again and again in a set way. At 30C, the usual strength, none of the beetle is left — only the sugar pill, or the water and alcohol in drops.
Trials do not show that it works better than a dummy pill. Its place rests on tradition alone, not on proof. Long use is not proof that a thing works, here or for any remedy on this page.
No one has shown how it could work, and no mechanism is accepted outside homeopathy.
Homeopathy rests on an idea called 'like cures like'. A substance that causes signs in a well person is meant to ease the same signs in a sick one. Handling these beetles was said to irritate skin and the urine tract, so the beetle was chosen for urinary complaints.
The beetle is then diluted far past the point where any of it is left. A 30C pill has been diluted 30 times over, one drop in a hundred each time. Lab tests find nothing of the source in it.
Some say the water keeps a 'memory' of what was once in it. There is no accepted proof of that idea. When trials compare these pills with dummy pills, the two come out the same.
You will most often see small sugar pills or granules that melt under the tongue. Liquid dilutions in water and alcohol are also sold, taken as drops.
Common strengths are 6C, 30C and 200C. The higher the number, the more times it has been diluted, and the less of the source is left. A 30C pill is the usual retail choice.
Mother tinctures and very low strengths such as 1X to 3X are not general retail items for this beetle.
The Colorado potato beetle spread fast across North America in the middle of the 1800s as potato farming grew. American homeopaths of that era tested many local plants, animals and insects.
Doryphora decemlineata entered homeopathic reference books in the late 1800s. Writers of the time described stinging, burning urination and a constant urge to pass water.
It has always been a small remedy. It is used far less than staples such as Cantharis, and it belongs to one tradition only.
See a doctor the same day if you have a fever, chills, pain in your side or lower back, blood in your urine, or vomiting along with urinary pain. Go to an emergency department if you cannot pass urine at all, or if you get swelling of the lips, face or throat, a spreading rash, or trouble breathing after taking any product. Also see a doctor if burning or urgency has not settled within 3 days, if it keeps coming back, or if you are pregnant, have diabetes, or have a known kidney problem.
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 Doryphora decemlineata 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.
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