Tannins

Effects

  • Astringent: astringent, tanning.
  • Waterproofing
  • Anti-inflammatory
  • Anti-secretion
  • Peristaltic inhibiting
  • Antimicrobial, antiviral
  • Plaque inhibiting
  • Antioxidant

Indications

Internal:

  • Diarrhea
  • Urinary tract infections

External:

  • Inflammation of the mouth and throat (eg aphthae, gingivitis).
  • Inflammatory, weeping and itching skin diseases of various causes, such as diaper dermatitis, intertrigo, small burns, itching, especially in the genito-anal area
  • Childhood diseases: Measles, chickenpox, rubella
  • Excessive sweating

Active ingredients

Catechin tannins are oligomers proanthocyanidins and polymers proanthocyanidins, ie oligomers and polymers of catechins catechin, epicatechin and other flavonoids. Degradation products are the tannin reds (phlobaphenes). DL-catechin: esters of gallic acid and derivatives with sugars and derivatives, e.g., glucose. Example: Hamamelitannin Gallic acid: derivatives of caffeic acid and phloroglucin e.g. the labiate tannins, rosmarinic acid.

  • Blackberry
  • Cranberry
  • Oak
  • Strawberry
  • Hamamelis
  • Bilberry
  • Raspberry
  • Lady’s mantle herb
  • Grapefruit
  • Walnut
  • Plant galls (tannin)
  • Ratanhia
  • Rhubarb
  • Black currants
  • Red wine
  • Black tea
  • Tea
  • Tormentill

Contraindications

  • External: partly irritating to the skin, so do not use in the eyes.
  • Internally: according to package insert
  • Pregnancy and lactation: see package leaflet

Adverse effects

  • Internal: constipation
  • Externally: skin reactions, skin irritation.