Educational information, not medical advice — ask your doctor or midwife.
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Lac humanum is a homeopathic remedy. It is made from human breast milk. The Latin name is Lac Homo sapiens, and it is also called human breast milk.
The milk is diluted over and over in water and alcohol. Each step is shaken hard. At 30C, a common strength, not one molecule of the milk is left.
Homeopaths choose it for a person's mood and life story, not for a named disease. Common themes are feeling cut off from other people, low self-worth, and strain between a mother and her child.
Here is the plain verdict. Trials do not show that it works better than a dummy pill (placebo). Its use in homeopathy is real and written down, but traditional use is not proof that something works.
The honest answer is that it is not clear it does anything at all.
Homeopathy rests on two old ideas. The first is that a thing which causes a symptom can also treat it. The second is that shaking and diluting makes a remedy act more strongly.
Neither idea fits what we know about the body. At 30C there is no milk left to act on you. Any change people feel is likely the placebo effect, which means feeling better because you expect to.
Homeopaths match this remedy to the person, not to a test result. That match comes from case notes and provings, not from trials.
It comes in a few simple forms.
The most common is small round pills or pellets made of lactose (milk sugar) or cane sugar. Liquid drops in water and alcohol are also sold. Some homeopaths make it up to order for one patient.
Strengths are written as 6C, 30C, 200C or LM. The higher the number, the more times it was diluted. Shops most often stock 30C.
This is a newer remedy, not an old one.
Homeopathy began with Samuel Hahnemann in Germany around 1796. Milk remedies from animals such as the dog and the cow were added during the 1800s.
Human milk was tested and written up by homeopaths in the 1990s. A proving is a record of what healthy people report while taking a remedy. So the remedy has a real but short record, held within one tradition.
See a doctor within a day if a baby is feeding poorly, is very sleepy, has a fever, or is losing weight. Get help the same day for a fever in a baby under three months old.
See a doctor if low mood after birth lasts more than two weeks, or stops you caring for yourself or your baby. Get help straight away if you have thoughts of harming yourself or your child.
Also book an appointment if a rash spreads or weeps, if a breast turns red, hot and painful, or if any symptom you are treating this way is not better in two to four weeks.
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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