Educational information, not medical advice — ask your doctor or midwife.
Bacillus Morgan is a homeopathic remedy. It is made from Morganella morganii, a germ that lives in the human bowel. Homeopaths give it mainly for long-running skin, gut and catarrhal (mucus) problems.
It is one of the Bach–Paterson bowel nosodes. These are a small group of remedies made from gut germs. They were first prepared in the 1920s and 1930s.
The remedy is made by diluting the source again and again. Each step adds hard shaking. At 30C, the usual strength, none of the first germ material is left.
So what you take is water, a water and alcohol mix, or a sugar pellet. No source material can be measured in it.
Trials do not show these remedies beat placebo (a dummy pill). Long use within homeopathy is not proof of effect. We say this once here, and will not repeat it in each section below.
No one has shown how this remedy could act. At 30C, no molecules of the source germ are left.
Homeopaths hold that a very dilute substance can prompt the body to mend a symptom pattern. At full strength, the same substance would cause that pattern in a well person. Lab science has not shown that water holds any imprint of what was once in it.
So the proposed way it works has no support.
Bowel nosode prescribers add a second idea. They say that gut germ patterns match certain remedy "types" of person. This came from stool tests by Bach and Paterson, not from controlled trials.
Three things best explain reports of getting better. One is the placebo effect. Another is the natural rise and fall of long-term illness.
The third is the long, caring talk a homeopath gives.
Bacillus Morgan comes as small sugar pellets, tiny granules, liquid drops, or single-dose powders. The drops sit in a water and alcohol base.
Common strengths are 30C, 200C and 1M. Low strengths such as 6X or 6C are rare for bowel nosodes. Some practitioners give one single dose in a sealed vial, not a bottle for daily use.
Hold pellets under the tongue until they melt. Put drops under the tongue, or add them to a little water.
Bacillus Morgan comes from a small corner of homeopathy. It is about a hundred years old. It does not come from any older folk tradition.
Edward Bach worked in London in the 1920s. He grew germs from patients' stool samples and made remedies from them. He named this one after the Morgan group of germs.
John Paterson in Glasgow carried the work on and built on it through the 1930s.
Paterson linked each bowel nosode to a set of plant and mineral remedies. So Bacillus Morgan is often paired with Sulphur, Graphites or Petroleum.
The system stayed a niche interest within homeopathy. It never entered mainstream medicine.
Germ names have changed since then. The organism is now called Morganella morganii.
See a doctor if your skin becomes hot, swollen, weeping or crusted, as that can mean infection. Get help the same day for a fever above 38C, severe stomach pain, vomiting you cannot stop, or blood in your stool or vomit.
Book an appointment if a symptom you are treating has not improved in two weeks, or if it keeps coming back. Call emergency services for sudden difficulty breathing, swelling of the lips or tongue, or a severe rash spreading fast, which can signal a serious allergic reaction to any product.
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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