Last update Nov. 1, 2023

Tannic Acid, Tannins, tannoids


Safe substance and/or breastfeeding is the best option.

It is an acid composed of glucose and phenolic acids found in bark and roots of fruits and plants. It is a form of tannin, a polyphenol. Tannins are abundant in the bark of oak and chestnut trees. There are foods rich in tannic acid: red wine, coffee, tea, spinach, guava. It has astringent and antioxidant properties. It has been used as an astringent for the mucous membranes of the mouth and throat, and in suppositories for the treatment of hemorrhoids. It is an ingredient in several dermatological preparations.

At the time of the last update, we found no published data on its excretion in breast milk.

Their high molecular weight makes their passage into milk in significant concentration unlikely.

When administered orally, it is converted to gallic acid and glucose in the intestine and is absorbed irregularly (AEMPS 202).  It is a product devoid of toxicity, which is found in many foods, so it is not expected to cause problems during lactation.

Its consumption as part of a food and its topical use are compatible with lactation.


We do not have alternatives for Tannic Acid, Tannins, tannoids since it is relatively safe.

Suggestions made at e-lactancia are done by APILAM team of health professionals, and are based on updated scientific publications. It is not intended to replace the relationship you have with your doctor but to compound it. The pharmaceutical industry contraindicates breastfeeding, mistakenly and without scientific reasons, in most of the drug data sheets.

Jose Maria Paricio, Founder & President of APILAM/e-Lactancia

Your contribution is essential for this service to continue to exist. We need the generosity of people like you who believe in the benefits of breastfeeding.

Thank you for helping to protect and promote breastfeeding.

José María Paricio, founder of e-lactancia.

Other names

Tannic Acid, Tannins, tannoids in other languages or writings:


Main tradenames from several countries containing Tannic Acid, Tannins, tannoids in its composition:

  • Antihemorroidal pomada rectal™. Contains other elements than Tannic Acid, Tannins, tannoids in its composition
  • Eau Précieuse™. Contains other elements than Tannic Acid, Tannins, tannoids in its composition
  • HEC™. Contains other elements than Tannic Acid, Tannins, tannoids in its composition
  • Tanagel Polvo
  • Tego


Variable Value Unit
Molecular weight 1.701 daltons


  1. FDA. U.S. Food & Drug Administration Part 184.1- Substances added directly to human food affirmed as generally recognized as safe (GRAS). CFR. 2023 Consulted on Dec. 12, 2023 Full text (link to original source) Full text (in our servers)
  2. CINFA. Antihemorroidal. Ficha técnica. 2022 Full text (in our servers)

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