Educational information, not medical advice — ask your doctor or midwife.
Ferrum muriaticum is a homeopathic remedy made from iron chloride. Its Latin name is Ferri chloridum. You may also see it called iron chloride or ferrum mur.
It is a single drug remedy. That means it is made from one starting material, not a blend. Homeopaths pick it for tiredness with pale skin, sudden loose stools, and pain in the right shoulder.
The evidence is weak. The iron chloride is diluted again and again. At a 30C strength, none of the starting iron is left.
Trials do not tell such remedies apart from a dummy pill (placebo). Long use in homeopathy is not proof that a remedy works. Both facts sit on this page side by side.
There is no accepted way this remedy could work in the body, and you should know that up front.
Homeopathy rests on two old ideas. The first is "like cures like": a substance that causes a symptom in a well person is said to treat that symptom in a sick person. The second is that shaking and diluting a substance makes it act more strongly.
The making process explains the problem. The iron chloride is mixed with water or alcohol, shaken, and diluted. This is repeated many times.
Each C step is a 1-in-100 dilution. By 30C, the odds of even one atom of iron being left in your pill are effectively zero. So any change you feel is most likely down to time, care and belief, not to iron.
Low strengths are different. Forms such as 1X or 3X are diluted far less and can still hold a real, if small, amount of iron. That matters for people who must not take extra iron.
Ferrum muriaticum is sold in a few simple forms.
Common forms include:
Small round sugar pellets that melt under the tongue.
Liquid drops in a water and alcohol base.
Tablets made with milk sugar (lactose).
Strengths on the label are usually 6C, 12C, 30C or 200C. Low decimal strengths such as 3X are sold as tissue salts and may still contain a trace of iron.
Iron salts have been used in medicine for hundreds of years, mostly for weakness and pale skin.
Homeopathy began in Germany in the late 1700s with Samuel Hahnemann. His followers tested many mineral salts, including iron chloride, in the 1800s. They wrote down the symptoms these caused in healthy volunteers and built remedy pictures from them.
Ferrum muriaticum has stayed in homeopathic reference books since then. It is a recognised name in that one tradition, not a shared remedy across many healing systems.
See a doctor if you feel very tired, look pale, get short of breath on light effort, or your heart races. These can be signs of low iron in the blood (anaemia) or of bleeding somewhere.
Book an appointment if loose stools last more than a few days, if you see blood in your stool, or if nosebleeds keep coming back.
Get help the same day if you have black, tarry stools, bad stomach pain, or you vomit blood.
Call emergency services if a child swallows iron tablets or iron drops, even if the child seems fine.
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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