What is Asterias rubens?

Asterias rubens is a homeopathic remedy made from the red starfish, a sea animal. In homeopathy it has been used mainly for breast pain and breast lumps. It has also been used for skin spots and for a tense, restless mood.

The remedy is made by diluting the starfish over and over. Each step shakes the liquid and cuts the strength again. At 30C, which is the most common strength sold, no starfish is left in the pills at all.

Human trials do not show that it works better than a dummy pill (placebo). Long use in homeopathy is not proof that a thing works. A breast lump needs a doctor, not a home remedy.

How does Asterias rubens work?

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

Homeopaths work from an old idea called "like cures like". They say a tiny dose of something that causes symptoms can also ease those symptoms. They say that shaking and diluting leaves an imprint in the water.

Chemistry does not support that idea. At 30C the starfish has been diluted so far that not one molecule (the smallest unit of a substance) is left. Any change people notice is most likely a placebo effect, which means the effect comes from belief and attention, not from the pill.

What forms does Asterias rubens come in?

Sugar pellets are the most common form.

You may also find: - Small round pellets or tablets that melt under the tongue - Liquid drops, often in an alcohol base - Mother tincture, the strong first extract, sold mainly to practitioners - Common strengths on the label such as 6C, 30C and 200C

The number and letter on the label tell you how far it was diluted. A higher number means more dilution, not more drug.

Where it comes from:

Asterias rubens entered homeopathy in the 1800s in France. The homeopath Petroz is credited with the first "proving", the test where healthy people take a substance and write down what they feel.

Homeopathic books have listed it ever since, mostly for breast complaints and for skin spots in young people. It is a known remedy, but not one of the main ones.

What does Asterias rubens help with?

• Breast pain and swelling before a period: This is the best known use in homeopathy. Books describe sore, heavy breasts that hurt more in the days before a period. No human trial has tested Asterias rubens for this. Simple steps such as a supportive bra, pain relief and a doctor's check have real evidence behind them.
• Breast lumps (traditional use only — always get a lump checked): Homeopathic texts list this remedy for hard lumps in the breast. Do not act on that. A new lump can be harmless, but it can also be cancer, and only tests can tell. See a doctor first. There is no trial evidence that this remedy shrinks a lump of any kind.
• Acne and skin spots: Older books used it for spots on the face in teenagers, often alongside breast symptoms. There are no human trials for this use. Creams and tablets from a pharmacy or doctor have far better evidence.
• Tense, restless mood: The remedy picture describes a person who feels edgy, jumpy and unable to settle. This comes from provings, not from trials. If low mood or worry lasts more than a couple of weeks, talk to your doctor.
• Headache: Homeopathic texts mention a heavy, pressing headache linked with the same remedy picture. No trial has tested this. A new, severe or changing headache needs a doctor, not a home remedy.

What are the side effects of Asterias rubens?

• Most people notice nothing at all
• A short flare of the same symptoms in the first days, which homeopaths call an aggravation
• Rash, itch or swelling if you react to the mother tincture or a very low strength
• Upset stomach, rarely
• A tiny amount of sugar in each pellet, which matters only if your doctor has told you to avoid it
• Alcohol in liquid drops, which matters if you avoid alcohol
• The main risk is not a side effect: it is putting off tests or care that you need

Good to know:

A 30C pill has no starfish left in it. So direct harm from the remedy is very unlikely. Reports of side effects are rare and mild.

The real danger is different. If you treat a breast lump at home, you may lose time that matters. Use this remedy only alongside proper medical care, never in place of it.

How much Asterias rubens should you take?

• Recommended daily: There is no proven dose, because the remedy has not been shown to work. Makers usually print something like this on the pack: - 3 to 5 pellets of 30C under the tongue - Up to three times a day - Let them melt; do not chew Follow the pack or the advice of a qualified homeopath. Taking more does not make it stronger.
• Best time of day: Any time of day. Many people take it morning and evening. Homeopaths often suggest keeping strong flavours, such as coffee or mint, away from the dose by about 15 minutes, though this is custom rather than proven.
• With or without food: Usually taken between meals, about 15 minutes before or after food or drink. This is homeopathic custom, not a tested rule.
• Time to effect: There is no reliable answer, because trials do not show an effect beyond placebo. People who report a change usually say it came within a few days.
• How long to take it: Keep any trial short. Most homeopaths suggest a few days to two weeks, then a review. Stop and see a doctor if nothing has changed after two weeks. Stop sooner if your symptoms get worse.