Last update Jan. 23, 2026

Flaxseed

Likely Compatibility

Fairly safe. Mild or unlikely adverse effects. Compatible under certain circumstances. Follow-up recommended. Read Commentary.

The dried seeds of this herbaceous plant are used. It contains 25% insoluble fibre, 40% oil and triglycerides (α-linoleic acid, ALA), polysaccharides (mucilage), cyanogenic glycosides, flavonoids and lignans (phytoestrogens). Attributed properties: laxative, hypolipidemic, topical cutaneous anti-inflammatory. Indication from the German Ministry of Health's Commission E and the European Medicines Agency (EMA): constipation. (EMA 2015, Goyal 2014, Basch 2007, Thompson 2006, Fletcher 2003, Blumenthal 1998). As food, it is consumed as whole or ground seeds (flaxseed), linseed oil and flaxseed flour, and is used in cereal bars and bakery and pastry products.

As it is non-toxic, it can be consumed during breastfeeding, but its high concentration of lignans, phytoestrogens with oestrogenic effects (Fletcher 2003, Stark 2002), makes moderate consumption advisable and prolonged use should be avoided.

Consumption of flax seeds or flaxseed oil increases the concentration of α-linoleic acid (ALA) in breast milk (Brenna 2009, Francois 2003), but not docosahexaenoic acid (DHA); as ALA is a precursor of DHA, this could improve the DHA concentration in the infant.

The fat and linoleic acid concentrations in banked milk are reduced due to pasteurisation and freezing. (Vázquez 2014, García-Lara 2013 and 2012)

In some cultures, it is used as a galactagogue (Erarslan 2024), but this has not been demonstrated in controlled trials. (Palacios 2023)


See below the information of this related product:

  • Lecithin (Safe product and/or breastfeeding is the best option.)

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

Flaxseed is also known as


Flaxseed in other languages or writings:

Tradenames

Main tradenames from several countries containing Flaxseed in its composition:

  • Aloelax™. Contains other elements than Flaxseed in its composition
  • Alpharégul Homme™. Contains other elements than Flaxseed in its composition
  • Efa™. Contains other elements than Flaxseed in its composition
  • Femarelle
  • Feminabiane Méno´Confort.™. Contains other elements than Flaxseed in its composition
  • Instalax™. Contains other elements than Flaxseed in its composition
  • Lignamid
  • Linoforce™. Contains other elements than Flaxseed in its composition
  • Linomed™. Contains other elements than Flaxseed in its composition
  • Numoisyn™. Contains other elements than Flaxseed in its composition
  • Optomega™. Contains other elements than Flaxseed in its composition
  • Salinum
  • Tofupill
  • Té Chupa Panza™. Contains other elements than Flaxseed in its composition

References

  1. Erarslan ZB, Kültür S. Medicinal plants traditionally used to increase breast milk in Turkey: An ethnobotanical review. J Herbal Med 2024;44:100849. Abstract
  2. Palacios AM, Cardel MI, Parker E, Dickinson S, Houin VR, Young B, Allison DB. Effectiveness of lactation cookies on human milk production rates: a randomized controlled trial. Am J Clin Nutr. 2023 May;117(5):1035-1042. Abstract Full text (link to original source)
  3. EMA. European Union herbal monograph on Linum usitatissimum L., semen EMA/HMPC/377675/2014 2015 Full text (in our servers)
  4. Goyal A, Sharma V, Upadhyay N, Gill S, Sihag M. Flax and flaxseed oil: an ancient medicine & modern functional food. J Food Sci Technol. 2014 Abstract Full text (link to original source) Full text (in our servers)
  5. Vázquez-Román S, Alonso-Díaz C, García-Lara NR, Escuder-Vieco D, Pallás-Alonso CR. Medida por crematocrito del contenido calórico de la leche materna donada congelada. [Effect of freezing on the "creamatocrit" measurement of the lipid content of human donor milk]. An Pediatr (Barc). 2014 Abstract Full text (in our servers)
  6. García-Lara NR, Vieco DE, De la Cruz-Bértolo J, Lora-Pablos D, Velasco NU, Pallás-Alonso CR. Effect of Holder pasteurization and frozen storage on macronutrients and energy content of breast milk. J Pediatr Gastroenterol Nutr. 2013 Abstract
  7. García-Lara NR, Escuder-Vieco D, García-Algar O, De la Cruz J, Lora D, Pallás-Alonso C. Effect of freezing time on macronutrients and energy content of breastmilk. Breastfeed Med. 2012 Abstract Full text (link to original source) Full text (in our servers)
  8. Brenna JT, Salem N Jr, Sinclair AJ, Cunnane SC; International Society for the Study of Fatty Acids and Lipids, ISSFAL. alpha-Linolenic acid supplementation and conversion to n-3 long-chain polyunsaturated fatty acids in humans. Prostaglandins Leukot Essent Fatty Acids. 2009 Abstract
  9. Basch E, Bent S, Collins J, Dacey C, Hammerness P, Harrison M, Smith M, Szapary P, Ulbricht C, Vora M, Weissner W; Natural Standard Resource Collaboration. Flax and flaxseed oil (Linum usitatissimum): a review by the Natural Standard Research Collaboration. J Soc Integr Oncol. 2007 Abstract
  10. Thompson LU, Boucher BA, Liu Z, Cotterchio M, Kreiger N. Phytoestrogen content of foods consumed in Canada, including isoflavones, lignans, and coumestan. Nutr Cancer. 2006 Abstract Full text (link to original source) Full text (in our servers)
  11. Francois CA, Connor SL, Bolewicz LC, Connor WE. Supplementing lactating women with flaxseed oil does not increase docosahexaenoic acid in their milk. Am J Clin Nutr. 2003 Abstract Full text (link to original source) Full text (in our servers)
  12. Fletcher RJ. Food sources of phyto-oestrogens and their precursors in Europe. Br J Nutr. 2003 Abstract
  13. Stark A, Madar Z. Phytoestrogens: a review of recent findings. J Pediatr Endocrinol Metab. 2002 Abstract
  14. Hutchins AM, Martini MC, Olson BA, Thomas W, Slavin JL. Flaxseed consumption influences endogenous hormone concentrations in postmenopausal women. Nutr Cancer. 2001 Abstract
  15. Blumenthal M, Busse WR, Goldberg A, Gruenwald J, Hall T, Riggins CW, Rister RS, editors. The American Botanical Council. The Complete German Commission E Monographs. Therapeutic Guide to Herbal Medicines. 1st ed. Integrative Medicine Com; Boston, MA, USA: 1998

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