Educational information, not medical advice — ask your doctor or midwife.
Calcarea arsenicosa is a homeopathic remedy. It is made from calcium arsenate, a white powder that holds arsenic. Homeopaths give it for tiredness, puffy swelling, hot flushes and worry.
The remedy is made by diluting the source again and again. At 30C, the usual strength, none of the starting material is left. What you take is water, alcohol or a sugar pellet.
Trials do not show any effect beyond placebo. The remedy has been used in homeopathy since the 1800s, but long use is not proof that something works. This page reports both axes: the evidence grade and the traditional tier.
There is no known way this remedy could act in the body.
Homeopathy rests on the idea of "like cures like". A substance that causes symptoms in a healthy person is said to ease those same symptoms when it is made very weak.
Makers shake the liquid hard at each step. They say this leaves an imprint of the source. Chemistry and physics do not support that idea.
At 30C, no molecule of the source is left. So any change you notice is likely a placebo effect. That is a real feeling, but it comes from hope and attention, not from the pill.
You will most often see small white sugar pellets. Liquid drops in water and alcohol are also sold.
Strengths carry a number and a letter. "C" means each step mixes 1 part in 100. "X" means 1 part in 10.
Common labels are 6C, 30C and 200C. A higher number means more dilution steps, not more substance. Low labels such as 1X, 3X or 6X may still hold real arsenic.
Homeopathy began in Germany in the late 1700s with Samuel Hahnemann. His followers tested many minerals and metals in diluted form.
Calcarea arsenicosa appears in homeopathic reference books from the 1800s. It was studied by "provings", where healthy people took doses and wrote down what they felt.
It has never been a leading remedy. It sits in the second rank of homeopathic mineral remedies and is used mainly by trained homeopaths.
Some reactions to Calcarea arsenicosa need urgent care. Call your local emergency number or go to an emergency department straight away — do not wait to see whether it passes.
Call emergency services at once if anyone swallows raw calcium arsenate powder, or if someone has vomiting, watery diarrhoea, stomach cramps, a garlic smell on the breath, confusion or a racing heart after taking a low-strength product. This is poisoning and needs hospital care.
See a doctor within a few days if your tiredness, swelling, rash or breathlessness does not settle, or if it is getting worse.
See a doctor sooner if you notice numb or tingling hands and feet, dark patches or hard spots on your skin, blood in your urine, or swelling that spreads. Always tell your doctor what you have been taking.
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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