What is Persimmon?

Persimmon is a tree fruit. The American persimmon, Diospyros virginiana, grows wild across the eastern United States. Its small orange fruit ripens late, often after the first frost.

The fruit is sweet when fully soft. When unripe it is harsh and puckering, because it is packed with tannins (plant compounds that bind to protein and make tissue feel dry). Folk healers used that dryness on purpose.

Old books sometimes call it a date plum. That name really belongs to a cousin, Diospyros lotus. The fruit most shops sell is a third species, the Asian persimmon, Diospyros kaki.

American folk and Eclectic doctors used the unripe fruit, the bark and the leaf for loose bowels and sore throats. Human evidence for any of that is very thin. Traditional use is not proof that a remedy works, and it is not proof that it is safe.

How does Persimmon work?

The proposed action is simple: persimmon is astringent, meaning it makes wet tissue feel tight and dry.

In test tubes, tannins from persimmon bind proteins and clump them together. On a mouth or throat lining, that is what produces the puckering feel. Whether this calms an inflamed gut in people has not been shown in good trials.

In laboratory work, persimmon tannins also bind iron and some other minerals. In animal studies, persimmon fibre and tannin lowered blood fats. These are early findings, not proven effects in people.

The ripe fruit also brings fibre, which can bulk the stool. That part is ordinary food behaviour, not medicine.

What forms does Persimmon come in?

Most people meet persimmon as plain fruit. Herbal forms are much less common, and American persimmon products are rare on shelves.

Fresh ripe fruit, eaten soft and jelly-like. This is the usual and safest form.

Dried persimmon, sold as slices or whole cakes. Drying concentrates the sugars.

Persimmon leaf tea, mostly made from the Asian species and sold loose or in bags.

Persimmon tannin or fibre capsules, again almost always from the Asian species.

Bark or unripe-fruit decoctions, a historic Eclectic preparation. You will not find these in shops today.

Where it comes from:

Persimmon had a settled place in American folk practice and in Eclectic medicine through the 1800s.

Eclectic physicians listed the inner bark and the green fruit as astringents. They were written up for long-running diarrhoea and dysentery (a gut infection with bloody stools). Gargles of the bark were described for sore throat and mouth ulcers.

Indigenous peoples of the southeast ate the ripe fruit as a staple food and dried it for winter. Settlers made persimmon bread, beer and pudding.

The medicinal uses faded once better treatments arrived. The food use never went away. None of this history tells you the remedy uses work.

What does Persimmon help with?

• Long-running diarrhoea: This was the main Eclectic use. The bark and unripe fruit were given to dry and tighten an irritated bowel. There are no human trials of American persimmon for diarrhoea. Tannins do bind protein in test tubes, which is the basis of the idea. That is not the same as proof in people. Diarrhoea that lasts, or that has blood in it, needs a doctor rather than a home remedy.
• Sore throat and mouth sores: Folk practice used a bark gargle for a raw throat or mouth ulcers. The effect people noticed is the astringent, drying feel. No trial has tested whether it speeds healing or eases pain better than warm salt water. It is not a treatment for a throat infection that needs antibiotics.
• Piles (swollen veins at the back passage): A cooled bark wash was applied to piles as a drying, soothing rinse. Evidence here is historical only. No modern study has tested it. Bleeding from the back passage should always be checked by a doctor first.
• Everyday fibre and nutrients: This is the one use that is not in doubt. Ripe persimmon is a normal fruit with fibre, potassium and carotenoids. Small trials of persimmon tannin and fibre, using the Asian species, have hinted at modest drops in blood fats. The results are mixed and the studies are short. Eating fruit is sensible. It is not a treatment for high cholesterol.

Which foods are rich in Persimmon?

1. Fresh ripe American or Asian persimmon
2. Dried persimmon slices and cakes
3. Persimmon pudding and persimmon bread
4. Persimmon leaf tea

Practical Tips:

Persimmon is a food first. The ripe fruit is the sensible way to have it. Dried persimmon is concentrated, so the sugar and the tannin both rise.

What are the side effects of Persimmon?

• A dry, puckering mouth from unripe fruit
• Stomach ache or bloating after large amounts
• Constipation, or looser stools in some people
• Nausea
• Less iron absorbed from food and supplements
• Rarely, a bezoar: a hard ball of undigested fruit stuck in the stomach
• Rarely, an allergic reaction with itching, rash or swelling

Good to know:

Ripe persimmon eaten as food suits most people and causes no trouble.

The real hazard is the bezoar. It is uncommon, but it is well documented and can block the gut. Risk goes up with unripe fruit, large amounts, an empty stomach, past stomach surgery, or a stomach that empties slowly.

Mild mouth dryness and stomach upset are the usual complaints. Severe belly pain or vomiting after eating a lot of persimmon is not normal and needs checking.

How much Persimmon should you take?

• Recommended daily: Ripe persimmon is a food. A normal serving is one or two fruits, the way you would eat any fruit. Persimmon leaf tea labels usually suggest one cup, up to two or three times a day. Capsule labels for persimmon tannin or fibre vary widely. These are the amounts labels carry. They are not a dose chosen for you. No safe amount can be given for bark or unripe-fruit preparations, because they have not been studied.
• Best time of day: Time of day does not matter much. The one thing that does matter is not eating a large or unripe persimmon on an empty stomach, which is when stomach stones are most often reported. Many people find late evening a poor time for a big serving.
• With or without food: Eat persimmon with or after a meal, not on an empty stomach. An empty, acidic stomach is where persimmon tannins are most likely to clump. Choose fully ripe, soft fruit and chew it well. Keep tannin-rich tea an hour or two away from iron tablets or an iron-rich meal.
• Time to effect: For regularity from the fibre, a day or two is typical. For the traditional gut and throat uses, no honest timeline exists. There are no trials to draw one from. It is quite possible it does nothing for those complaints beyond the drying feel in your mouth.
• How long to take it: As a food, there is no time limit. Fruit is fruit. Astringent teas and tannin capsules were used in short runs, days rather than months. Heavy tannin intake over long stretches may cut how much iron you absorb. If you are taking it for a gut complaint and nothing changes within a few days, stop and get advice.