Last update Dec. 26, 2013

Sweet Flag

High Risk

Poorly safe. Evaluate carefully. Use safer alternative or interrupt breastfeeding 3 to 7 T ½ (elimination half-lives). Read the Comment.

Root is used.

Essential oil contains Asaron which is active within the Nervous System.

Anti-worm, insecticide and pesticide properties are recognized.

Suspicious of mutagen and carcinogen activity.

Considered to be a toxic has underwent sale restrictions in some countries.


We do not have alternatives for Sweet Flag.

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.


Sweet Flag belongs to this group or family:


Main tradenames from several countries containing Sweet Flag in its composition:

  • Bittner™. Contains other elements than Sweet Flag in its composition
  • Pervivo™. Contains other elements than Sweet Flag in its composition


  1. Hernández-Moreno D, Soffers AE, Wiratno, Falke HE, Rietjens IM, Murk AJ. Consumer and farmer safety evaluation of application of botanical pesticides in black pepper crop protection. Food Chem Toxicol. 2013 Abstract
  2. Gholkar MS, Mulik MB, Laddha KS. Fate of β-asarone in Ayurvedic Sodhana process of Vacha. J Ayurveda Integr Med. 2013 Abstract Full text (link to original source)
  3. Björnstad K, Helander A, Hultén P, Beck O. Bioanalytical investigation of asarone in connection with Acorus calamus oil intoxications. J Anal Toxicol. 2009 Abstract Full text (link to original source)
  4. MSC - Ministerio de Sanidad y Consumo de España. ORDEN SCO/190/2004, de 28 de enero, por la que se establece la lista de plantas cuya venta al público queda prohibida o restringida por razón de su toxicidad. BOE 2004; 32:5061-6065 Full text (link to original source) Full text (in our servers)
  5. Stahl E, Keller K. [To the classification of commercial Calamus drugs]. Planta Med. 1981 Abstract

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e-lactancia is a resource recommended by Academy of Breastfeeding Medicine - 2006 of United States of America

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