Peony

What is Peony?

Peony is a garden flower whose root was once used as a folk remedy. The plant is Paeonia officinalis, called Pfingstrose in German. In Europe it was tied for centuries to fits, cramps and nerve trouble.

Modern human research on this species is close to absent. Long use is not proof that it works. It is not proof that it is safe either.

A related plant, Paeonia lactiflora, carries most of the modern study data. Do not read that work across to garden peony. The two are kin, but they are not the same plant.

The short verdict: tradition is deep and well recorded, human evidence is missing, and the root can upset the gut.

How does Peony work?

No one has shown how garden peony acts in the human body. What exists comes from lab dishes and animals, often using other peony species.

In cell and animal studies, paeoniflorin appears to damp down some inflammation signals. In animal seizure models it has been reported to cut fit activity. Whether any of that happens in a person is not known.

Paeonol, another peony compound, slows some bacteria in test tubes. That is a dish result, not a treatment effect.

In animals, some peony extracts have lowered blood pressure and calmed movement. These are early signals in rodents. They do not tell you what a tea or capsule does in you.

The old use against "falling sickness" rested on belief and charm, not on measurement. No human trial backs it.

What forms does Peony come in?

Peony turns up in a few simple forms. None of them is standardised the way a medicine is.

- Dried root, cut or powdered, for tea or a decoction (a boiled root extract) - Tincture, which is root soaked in alcohol - Capsules of powdered root

- Dried petals in tea blends and pot-pourri - Homeopathic drops and pellets, which are very dilute - Ointments and suppositories in older European products

Many labels just say "peony". That word covers several species with different chemistry. If the Latin name is missing, you do not know which plant you have.

Where it comes from:

Peony was a fixture of European folk medicine for well over a thousand years. Greek and Roman writers named it after Paeon, a healer in myth.

Through the Middle Ages, root beads were strung and hung around a child's neck. The aim was to fend off fits, cramps and night terrors. Old recipes also used the root for gout, jaundice and womb complaints.

German herbals knew it as Pfingstrose, the Whitsun rose, from its flowering time. It was also called Gichtrose, the gout rose.

Use faded through the 1900s. In 1990 a German expert panel on herbal medicines, Commission E, judged the evidence too weak to support peony. It has not returned to mainstream use.

What does Peony help with?

• Seizures and convulsions (folk use only): This was peony's most famous old claim, and it has no human evidence behind it. Root beads were worn to stop "falling sickness". Animal work on peony compounds shows some effect in seizure models. That is a long way from a result in people. Never swap a prescribed anti-seizure medicine for peony.
• Muscle cramps and spasms: Folk healers used peony root for cramps and twitching limbs. Some animal and tissue studies suggest peony compounds relax smooth muscle. No trial has tested garden peony for cramps in people. Treat this as an old idea, not a known effect.
• Restlessness and nervous complaints: Peony root was given for jitters, bad dreams and "nerves". In rodents, some peony extracts reduce activity and look mildly calming. There is no human sleep or anxiety trial for this species. Better studied calming herbs exist, and a doctor can point you to them.
• Gout and joint pain: The German name Gichtrose means gout rose, which shows how it was used. Lab studies find anti-inflammatory signals from paeoniflorin. Modern joint research used a different plant, Paeonia lactiflora, and a measured extract. That work does not transfer to garden peony root.
• Period cramps: Old European use included painful and late periods. This is also why pregnancy warnings exist: the root was thought to act on the womb. No human study supports peony for period pain. The pregnancy risk is reason enough for caution.
• Piles and skin sores (applied to the skin): Peony ointments were rubbed on piles, cracked skin and small sores. The tannins in the root are drying, which may explain the appeal. Human evidence is absent. Peony can also cause a skin rash in some people who handle it.

What are the side effects of Peony?

• Nausea
• Vomiting
• Diarrhoea and stomach cramps
• Bitter taste and dry, rough mouth
• Headache
• Drowsiness
• Skin rash from handling the plant
• Allergic reaction, including itching and swelling

Good to know:

Gut upset is the main problem, and it rises with the amount taken. Root and seed in quantity act as a purge.

Serious reactions look rare, but reporting is thin because few people use this plant now. Absence of reports is not the same as proof of safety.

Stop at once if you get a rash, swelling or belly pain that does not settle.

How much Peony should you take?

• Recommended daily: There is no established daily amount for Paeonia officinalis, and this page does not suggest one. No health authority has set a figure. Where products exist, labels usually give a small amount of dried root per day, or a few drops of tincture. These numbers come from tradition, not from testing. Larger amounts of root and seed act as a purge. Vomiting and watery diarrhoea are the usual result. More is not better here.
• Best time of day: Time of day does not matter in any way that has been measured. People who use it for calm or sleep tend to take it in the evening. That is habit, not evidence.
• With or without food: Taking it with food may soften stomach upset. The root is bitter and rich in tannins, which can turn the stomach on an empty gut. Tannins also bind iron from food and from iron tablets. Keep peony well apart from an iron supplement.
• Time to effect: Honest answer: unknown. No trial has tracked how fast peony works in people, or whether it works at all. Any gut upset tends to show within hours. If nothing good happens after a short trial, it is unlikely to start later.
• How long to take it: No safe length of use has been worked out. Folk use was short and for a specific complaint, not daily for months. There is no long-term safety data in people. If you choose to try it, keep it brief and tell your doctor.