What is Digitalis purpurea?
Digitalis purpurea is a homeopathic remedy made from the foxglove plant. It is a single remedy, not a blend.
Homeopaths use it for people whose main complaint is a slow or uneven pulse. They also use it for a fluttering feeling in the chest. And for feeling sick when the heart is in trouble.
To make it, the plant is soaked in liquid. That liquid is then watered down again and again. The maker shakes it at each step.
30C is a common strength. By then, the mix has been watered down so far that almost none of the plant is left.
Low strengths are not the same. The mother tincture, 1X and 3X can still hold real plant chemicals. Those chemicals are strong heart poisons.
Here is the honest verdict: trials do not show homeopathic Digitalis working better than a dummy pill.
The remedy has been used in homeopathy for a long time. That is a real fact about the practice. But long use is not proof that it does anything in your body.
Foxglove is one of the most dangerous plants in the garden. So the safety notes below still matter, even though the high dilutions are inert (they hold nothing active).
How does Digitalis purpurea work?
There is no accepted way that a 30C dilution could act on your heart. At that strength, almost no foxglove is left in it.
Homeopathy has its own idea about this. It says a substance that causes symptoms in a well person can ease those same symptoms in a sick one. It also says that watering down and shaking keeps that action.
This idea has no support from chemistry or physics. It is not a proven mechanism (a proven way of working).
Low strengths are a different story. If plant material is still there, cardiac glycosides (plant chemicals that act on the heart) can act on the heart directly. That action can harm you or kill you.
So treat any effect you feel from a low-strength product as a warning sign. It is not a benefit.
What forms does Digitalis purpurea come in?
Homeopathic Digitalis purpurea usually comes in these forms:
- Sugar pellets or tablets that melt under the tongue - Liquid drops in a base of alcohol and water - Low-strength tinctures, which many countries restrict or sell only on prescription
Common strengths are 6C, 12C, 30C and 200C. A higher number means the remedy has been watered down more. The more it is watered down, the less chance that any plant material is left.
Never buy or pick raw foxglove leaves to make anything at home.
Where it comes from:
Foxglove joined formal medicine in 1785. That year, an English doctor named William Withering wrote about its use for dropsy (body swelling caused by a failing heart). Much later, his work led to the modern drug digoxin.
Homeopathy took up the plant in the early 1800s. Homeopathic writers noted it for a slow pulse and a sinking feeling in the chest. They also noted it for feeling sick and for yellowed skin.
It has stayed a named remedy in homeopathic materia medica (the reference books of remedies) ever since.
If this is an emergency
Some reactions to Digitalis purpurea need urgent care. Call your local emergency number or go to an emergency department straight away — do not wait to see whether it passes.
Who should avoid Digitalis purpurea?
- Do not use if you take digoxin, digitoxin or any other digitalis heart drug. This mix is not safe at any strength.
- Do not use if you are tempted to pick foxglove leaves or make your own tea or tincture. The raw plant can kill.
- Do not use if you have any heart rhythm problem, a slow pulse, heart failure or heart block (a fault in the heart's wiring), unless your own doctor has told you it is fine.
- Do not use if you take water pills, beta blockers, verapamil, diltiazem, amiodarone or quinidine.
- Do not use if you have low potassium, low magnesium or high calcium in your blood.
- Do not use if you have kidney disease, which lets heart chemicals build up in the blood.
- Do not use if you are pregnant or breastfeeding.
- Do not use if you are buying it for a child or an older adult without a doctor's advice.
- Do not use if you would be putting off or replacing prescribed heart treatment.
- Do not use if you are offered mother tincture, 1X, 2X or 3X strength for self-treatment.
When should you see a doctor?
Call emergency services now if you or anyone else has eaten any part of a foxglove plant, or has taken a low-strength foxglove tincture, or has vomiting with a slow or racing pulse, blurred vision, yellow-green haloes around lights, confusion or fainting.
See a doctor the same day for chest pain, breathlessness, a pulse that feels very slow or wildly irregular, or new swelling in both legs.
Book an appointment if yellow skin or eyes, lasting nausea or ongoing palpitations do not settle, or if symptoms come back after you stop the remedy.
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