What are the uses of tannic acid

TanninsDrug groups / phytopharmaceuticalsPhytonutrients Tannins are drugs that precipitate proteins and have a sealing and anti-inflammatory effect. They are used, among other things, for skin diseases and diarrhea. Most of the tannins are of vegetable origin.

synonymous: astringents, astringents




  • Inflammations in the mouth and throat (e.g. aphthae, inflammation of the gums)
  • Inflammatory, oozing and itchy skin diseases of various causes, e.g. diaper rash, intertrigo, small burns, itching, especially in the genito-anal area
  • Teething diseases: measles, chickenpox, rubella
  • excessive sweating
Active ingredients

1. Catechin tannins

Catechin tannins are oligomeric proanthocyanidins and polymeric proanthocyanidins, i.e. oligomers and polymers of the catechins catechin, epicatechin and other flavonoids. Degradation products are the tannin red (phlobaphene).


2. Hydrolyzable tannins (gallotannins)

Esters of gallic acid and derivatives with sugars and derivatives, e.g. glucose. Example: Hamamelitannin

Gallic acid:

3. Caffeic acid and phloroglucine derivatives

Derivatives of caffeic acid and of phloroglucinol

e.g. the labiate tanning agents, rosmarinic acid

4. Other tannins

Tanning Drugs:

  • External: partly irritating to the skin, therefore no use in the eyes
  • internally: according to the package insert
  • Pregnancy and breastfeeding: see information for professionals
unwanted effects
  • internally: constipation
  • external: skin reactions, skin irritations

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This article was last changed on 9/30/2012.
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