Oak contraindications


What is an oak and what it is used for?

An oak is a tree of the Fagaceae family, which has properties in herbal medicine owing to its richness in tannins (20%) and flavonoids.

Oak has astringent, antibacterial, anti-inflammatory and diuretic properties.

It is used to treat diarrhea, inflammation, tonsillitis, throat and mouth sores.

* More information on the medicinal properties of oak.

Contraindications of oak

Oak leaves and fruits (acorns)Oak leaves and fruits (acorns)

  • Pregnancy and lactation with oak remedies are contraindicated.
  • Children under 6 years should not take this kind of remedies.
  • Oak for people with bronchial asthma is contraindicated because of oak allergenic components.
  • Digestive Ulcers: The high tannin content of oak makes it contraindicated in case of digestive ulcers. Tannins in high doses are irritating to the gastric and intestinal mucosa, and may induce vomiting and even ulcerations.
  • Constipation: because it contains tannins, oak treatments can aggravate constipation.
  • Iron deficiency anemia: People with anemia should not take internal oak remedies. Tannins inhibit the absorption of iron from foods, supplements or drugs.

* Related information: Oak side effects

punto rojo More information on oak.

This article was endorsed by Montserrat Enrich - Journalist specializing in edible wild plants and plant uses.
Written by Editorial Botanical-online team in charge of content writing

15 June, 2021

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