Peach Tree

What is Peach Tree?

Peach tree bark and leaves come from the peach, Amygdalus persica (also listed as Prunus persica). This page is about the bark and leaves, not the fruit. American folk and Eclectic healers brewed them as a tea for upset stomachs and coughs.

Both parts hold cyanide-releasing compounds, called cyanogenic glycosides. When the plant tissue is crushed, chewed or damaged, these can give off hydrogen cyanide. That is a fast-acting poison.

How much is present swings widely. Leaf age, season, drying and wilting all change it. Wilted peach and cherry leaves have killed grazing animals, which is why farmers fence stock away from them.

The honest evidence verdict: there are no good human trials on peach bark or leaf for any health use. Long traditional use is not proof that it works, and it is not proof that it is safe. Because of the cyanide risk, this page gives no dose, no recipe and no course length.

How does Peach Tree work?

Nobody has shown how peach leaf or bark works in people. The folk ideas below are claims, not findings.

Folk writers said the tea settled a sour stomach, stopped vomiting and quieted a hard cough. One old idea was that very small amounts of cyanide dull nerve signals in the gut and throat. This has never been tested properly in people, and it is also the exact source of the danger.

The chemistry is better understood. The leaves and bark carry amygdalin and prunasin. Plant enzymes break these down when the tissue is crushed or soaked.

Gut bacteria can do the same job after you swallow them. The end product is hydrogen cyanide, which stops cells using oxygen. That part is well established, and it is why the margin between a weak tea and a harmful one is unknown.

The bark also holds tannins, which are drying, astringent compounds. In test tubes tannins bind proteins and can slow some bacteria. Whether that does anything useful in a person who drinks the tea has not been shown.

There are flavonoids in the leaf too, the same broad family found in many fruits. Lab work on these says little about what a cup of peach leaf tea does to you.

What forms does Peach Tree come in?

Peach bark and leaf are sold mainly as loose dried plant material.

Dried cut leaf, sold for tea.

Strips or chips of dried inner bark.

Alcohol tinctures from small herbal makers.

Syrups, mostly historical, often sweetened and mixed with other herbs.

Homeopathic preparations labelled Amygdalus persica, which are diluted so far that little or no plant material remains.

None of these are standardised for amygdalin. Two packets from the same shop can differ a lot. Peach kernel, the seed inside the stone, is sold under other names in some shops and carries the highest cyanide load of any part.

Where it comes from:

Peach leaf and bark had a real place in American folk and Eclectic medicine from the early 1800s into the early 1900s.

Eclectic doctors listed peach leaves for an irritable stomach, for vomiting, including sickness in pregnancy, and as a mild calming tea. The bark was described as a bitter tonic and an astringent. Peach leaf also appeared in home recipes for worms and for whooping cough.

In the rural South and in Appalachia, peach leaf tea was a common household remedy passed down in families. Poultices of bruised leaves were laid on sores and boils.

These uses were written down by practitioners of their day, not tested in trials. Reporting them here is history, not a recommendation to try them.

What does Peach Tree help with?

• Nausea and vomiting: This was the best known folk use. Eclectic writers praised peach leaf tea for an irritable stomach and for sickness in pregnancy. There are no human trials to support it. Pregnancy is also one of the situations where this plant should never be used, because of the cyanide risk to a developing baby. Ongoing vomiting needs a medical cause found, not a home tea.
• Cough, including whooping cough: Folk recipes combined peach leaf with honey or syrup for stubborn coughs. No human study has tested it. Whooping cough is a serious infection in babies and young children and is treated with antibiotics and vaccination. Using a cyanide-containing plant in a child who is coughing hard is a dangerous swap.
• Trouble sleeping or restlessness: The tea had a name as a mild sedative, meaning something that calms or brings sleep. No trial has measured this. If a calming effect exists at all, the most likely cause is a low-level toxic effect, which is not a safe way to get sleep.
• Intestinal worms: Home recipes used peach leaf as a vermifuge, a remedy meant to expel worms. There is no human evidence that it clears any worm infection. Worms are diagnosed with a stool test and treated with specific medicines that work.
• Bladder and urinary complaints: Some Eclectic texts used the bark and leaf for irritation when passing urine. No human studies exist. Burning urine, blood in urine or fever needs a doctor, since untreated urine infections can reach the kidneys.
• Sores, boils and skin washes: Bruised leaves were applied to skin, and bark washes were used on weeping sores. Tannins in the bark are drying, which may explain the appeal. There are no trials in people. Broken skin can absorb plant compounds, so this is not a safer route than drinking it.

Which foods are rich in Peach Tree?

Peach fruit flesh is an ordinary food and is not a concern. Eating peaches does not expose you to the amounts discussed here.

The kernel is different. That is the soft seed inside the hard stone, and it carries the highest level of cyanide-releasing compounds in the tree. Do not crack peach stones to eat the kernel, and do not buy ground apricot or peach kernel products for health reasons.

Swallowing a whole stone by accident is not the same risk, since an intact stone usually passes through.

What are the side effects of Peach Tree?

• Headache
• Dizziness or feeling faint
• Nausea, vomiting and stomach pain
• Flushed skin
• Fast breathing, then slow or gasping breathing
• Fast or irregular heartbeat
• Confusion or drowsiness
• A bitter almond smell on the breath
• Fits (seizures), collapse and coma in severe poisoning
• Thyroid gland changes with repeated use
• Skin rash from handling the leaves

Good to know:

A weak tea may cause nothing at all, which is why the plant kept its gentle reputation.

That is also the trap. The dose that does nothing and the dose that harms are not far apart, and you cannot tell them apart by taste or colour.

Serious cyanide poisoning from peach leaf is rare, but it is real, and it moves quickly. Children, babies and people who are pregnant are at the greatest risk. Treat any of the symptoms above after use as an emergency.

How much Peach Tree should you take?

• Recommended daily: This page gives no dose, on purpose. Peach bark and leaf hold cyanide-releasing compounds, and the amount varies widely between trees, seasons and batches. No one has worked out an amount that is safe in people. A number printed here would read as permission. There is no reliable way to know how much cyanide a given cup would release, so we will not print one.
• Best time of day: Timing does not make a cyanide-containing tea safe, so no best time can be given. There is no hour of the day that lowers the risk.
• With or without food: No food guidance is given, because no use is being advised. Do not assume food, milk or a full stomach cancels the risk. They do not neutralise cyanide.
• Time to effect: No health benefit has been proven in people, so it may well do nothing you want. Harm can come fast. After swallowing cyanide-releasing plant material, symptoms can begin within minutes to a few hours. Speed depends on how much was taken and on your gut bacteria.
• How long to take it: No course length is given, for the same reason. Repeat use is worse, not safer. The body turns cyanide into thiocyanate, a compound that can build up and interfere with the thyroid gland. If you are drawn to this plant for a problem that lasts more than a few days, that problem needs a doctor.