What is Lac defloratum?

Lac defloratum is a homeopathic remedy made from skimmed cow's milk. Its Latin name is Lac vaccinum defloratum, from the cow, Bos taurus. It is used as a single remedy, most often for bad headaches with nausea (feeling sick).

The milk is diluted over and over, with hard shaking at each step. At the common 30C strength, none of the starting milk is left. What you take is water, alcohol, or sugar pellets that were once wetted with the dilution.

Trials do not show that this remedy works better than a dummy pill. It does have a real place in homeopathic books from the 1800s. Long use in a tradition is not proof that a thing works, so we report the two things apart.

Think of it as a traditional remedy with no proven effect on the body. It is not a treatment for any disease. If your headaches are new, severe, or getting worse, see a doctor first.

How does Lac defloratum work?

There is no known way for this remedy to act on the body.

Homeopathy teaches that a heavily diluted substance can prompt the body to heal itself. It also teaches that shaking at each step leaves an "imprint" of the milk. No test has shown such an imprint, and no body process is known that would read it.

At 30C, the milk has been diluted far past the point where a single molecule could remain. So there is nothing in the pellet to act on nerves, blood, or the gut.

When people feel better after taking it, the likely reasons are placebo (a dummy treatment that still makes people feel better), the headache passing on its own, or the calm and attention of a long consultation.

What forms does Lac defloratum come in?

You will find it in a few simple forms.

Sugar pellets or tiny globules are the most common. Liquid drops in alcohol and water are also sold. Some brands make tablets that dissolve under the tongue.

Common strengths are 6C, 30C and 200C. Low strengths written with an X, such as 3X, are less common but may still contain traces of milk.

Where it comes from:

Skimmed cow's milk was tested on healthy people in the United States in the 1800s. Homeopaths call this a "proving".

Samuel Swan and later writers recorded the results. The picture they drew was of a person with a pounding headache, sickness, chills, and hard, dry stools.

It became a small but named remedy for sick headache in homeopathic books. It has never been a staple of any other healing tradition.

What does Lac defloratum help with?

• Headache with nausea (feeling sick): This is the classic homeopathic use. Old books describe a heavy, throbbing headache with sickness, made worse by light and by moving about. No human trial has tested Lac defloratum for headache, so there is nothing to weigh against a dummy pill. Get a doctor's advice for any headache that is new, very severe, or different from your usual pattern.
• Constipation with hard, dry stools: Homeopathic texts pair this remedy with stools that are large, dry and hard to pass. This came from the 1800s proving, not from testing in people with constipation. There is no trial evidence. Simple steps such as more fluid, more fibre, and movement have far better support.
• Nausea and vomiting, including in pregnancy: Some homeopaths have used it for morning sickness with headache and chilliness. This is tradition only, with no trials to support it. Talk to your doctor or midwife before using any remedy in pregnancy. Severe or constant vomiting in pregnancy needs medical care, not a remedy.
• Feeling cold, tired and pale: The proving describes a person who is always chilly and worn out. Homeopaths took that as a picture the remedy might match. Tiredness and paleness can point to low iron, thyroid trouble, or other treatable problems, so ask for a blood test rather than self-treating.
• Stomach upset blamed on drinking milk: Because the remedy is made from milk, some practitioners use it for people who feel worse after dairy. There is no evidence that it helps lactose intolerance (trouble digesting milk sugar) or milk allergy. Note that many pellets are made of lactose, so the remedy itself is not dairy free.

Which foods are rich in Lac defloratum?

1. Skimmed cow's milk: the source material, though drinking it is food, not a remedy
2. Milk-based pellets: most homeopathic pellets are made of lactose (milk sugar)

Practical Tips:

Homeopaths often advise avoiding coffee, mint and strong smells while taking a remedy; this is custom, with no evidence behind it.

What are the side effects of Lac defloratum?

• Usually nothing at all at 30C and above
• Allergic reaction in people with cow's milk allergy, mainly from low X strengths
• Itching, rash or swelling if an allergy is triggered
• Wind or loose stools from the lactose (milk sugar) in the pellets, if you are very sensitive
• A short flare of symptoms, which homeopaths call an aggravation
• Alcohol content in liquid drops, which matters if you avoid alcohol

Good to know:

At 30C there is no milk left, so direct side effects are very unlikely.

The real risks are different. One is a delay in getting a proper diagnosis. The other is an allergic reaction in someone with a cow's milk allergy who takes a low strength that still contains milk protein.

Severe allergic reactions to milk can be life-threatening. If you know you react to dairy, treat this remedy as a dairy product unless a pharmacist confirms the strength contains none.

How much Lac defloratum should you take?

• Recommended daily: There is no established dose, because no trial has shown any dose to work. Labels on shop-bought products usually suggest 3 to 5 pellets of a 30C strength, taken two or three times a day. Homeopaths who prescribe it often give a single dose and then wait. Follow the label on the pack you own, and do not exceed it.
• Best time of day: No time of day has been shown to matter. Homeopaths usually suggest taking pellets away from meals, often on waking and before bed.
• With or without food: Tradition says to take pellets on a clean mouth, about 15 minutes before or after food or drink. This is custom, not a proven rule.
• Time to effect: No effect has been proven, so no honest time frame can be given. Homeopaths expect a response within hours to a few days.
• How long to take it: Keep any trial short. A few days is enough to see if anything changes. If your symptoms have not improved within a week, stop and rethink. Do not keep taking it for months in place of a proper diagnosis.