Last update: Oct. 9, 2016

Devil´s Tongue

Very Low Risk for breastfeeding

Safe. Compatible.
Minimal risk for breastfeeding and infant.

Polysaccharide (mannose and glucose) obtained from Amorphophallus konjac a tuberous plant which is native from Southeast Asia and used in the traditional cuisine of the countries of that region.

Used as dietary fiber with satiating and laxative purposes. There is no a consistent scientific evidence on their effectiveness as a treatment for obesity.
The Commission E of German Ministry of Health has not approved any use.

At latest update no published data on excretion into breast milk were found.
Pharmacokinetic data (high molecular weight and no intestinal absorption) make it extremely unlikely any excretion into breastmilk in significant amounts.

A low-calorie diet and moderate exercise are preferable measures to lose weight.
Many women who breastfeed their infants recover their pre-pregnancy weight sooner than those who do not.


Suggestions made at e-lactancia are done by APILAM´s pediatricians and pharmacists, and are based on updated scientific publications.
It is not intended to replace the relationship you have with your doctor but to compound it.

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

Devil´s Tongue is also known as Glucomannan. Here it is a list of alternative known names::

Devil´s Tongue in other languages or writings:


Devil´s Tongue belongs to these groups or families:


Main tradenames from several countries containing Devil´s Tongue in its composition:


Variable Value Unit
Oral Bioavail. 0 %
Molecular weight 200.000 - 2.000.000 daltons


  1. Zalewski BM, Chmielewska A, Szajewska H. The effect of glucomannan on body weight in overweight or obese children and adults: a systematic review of randomized controlled trials. Nutrition. 2015 Abstract
  2. Onakpoya I, Posadzki P, Ernst E. The efficacy of glucomannan supplementation in overweight and obesity: a systematic review and meta-analysis of randomized clinical trials. J Am Coll Nutr. 2014 Abstract
  3. López-Regueiro S, Ramos Sáiz EM, López-Picado A, Burgos-Alonso N, Arana-Salaberría, A. Fitoterapia como coadyuvante en el tratamiento de la obesidad. Farmacéuticos Comunitarios 2012; 4(4): 166-174 2012
  4. AESAN. Informe del Comité Científico de la Agencia Española de Seguridad Alimentaria y Nutrición (AESAN) sobre condiciones de uso de determinadas sustancias distintas de vitaminas, minerales y plantas para ser empleadas en complementos alimenticios - 1. Revista del comité científico nº 17. 2012 Full text (in our servers)
  5. Chmielewska A, Horvath A, Dziechciarz P, Szajewska H. Glucomannan is not effective for the treatment of functional constipation in children: a double-blind, placebo-controlled, randomized trial. Clin Nutr. 2011 Abstract
  6. Keithley J, Swanson B. Glucomannan and obesity: a critical review. Altern Ther Health Med. 2005 Abstract
  7. Signorelli P, Croce P, Dedè A. [A clinical study of the use of a combination of glucomannan with lactulose in the constipation of pregnancy]. Minerva Ginecol. 1996 Abstract

Total visits


Help us improve this entry

How to cite this entry

Do you need more information or did not found what you were looking for?

   Write to us at

e-lactancia is a resource recommended by Confederación Nacional de Pediatría (CONAPEME) from Mexico

Would you like to recommend the use of e-lactancia? Write to us at corporate mail of APILAM