Last update Jan. 13, 2023


Likely Compatibility

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

Silicon is a metalloid element found widely in nature. It is an essential trace element.

  • Orthosilicic acid and so-called "organic silicon" (monomethylsilanetriol) have been used as a source of silicon in oral nutritional supplements.
  • Organic silicon compounds (silanol, silanetriol, monomethylsilanetriol potassium citrate, methylsilanol mannuronate, methylsilanol hydroxyproline aspartate and siloxanetriol alginate) have been used topically for hair and skin disorders and in antiaging creams.
  • Silicon compounds such as silicas and silicones have medical and pharmaceutical uses.

There is no evidence of their efficacy. (Araújo 2016)

Silicon also has industrial uses, particularly in electronics.

At the date of the last update we did not find any published data on its excretion in breast milk.

The mean concentration of silicon in breast milk is 0.47 mg/L. (Anderson, 1992) and does not correlate with plasma levels. (Tanaka 1990)

The observed daily intake of silicon is 20 to 30 mg per day (Prescha 2019), which is achieved with a varied diet rich in vegetables, without the need for dietary supplements: 100 g of oats contain 400 mg of silicon and 100 g of brown rice 1,100 g of silicon. (Pennington 1991). The physiological effects and adverse effects of silicon are not known. There is no data on what is the minimum or maximum recommended intake. (Inst.Med 2001)

High-silicon dietary sources are whole grains, especially oats and rice; vegetables, especially garden cress, green beans, spinach, beets, and carrots; spices like curry or thyme; fruits contain less silicon and there is very little in meat, fish and other animal products such as cheese or eggs. (Penington 1991)

The small dose and poor plasma absorption of most topical dermatological preparations make it unlikely that a significant amount will pass into breast milk.

There are products of null or low therapeutic utility, perfectly dispensable.


We do not have alternatives for Silicon.

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.


Main tradenames from several countries containing Silicon in its composition:


  1. Prescha A, Zabłocka-Słowińska K, Grajeta H. Dietary Silicon and Its Impact on Plasma Silicon Levels in the Polish Population. Nutrients. 2019 Apr 29;11(5). pii: E980. Abstract Full text (link to original source)
  2. Araújo LA, Addor F, Campos PM. Use of silicon for skin and hair care: an approach of chemical forms available and efficacy. An Bras Dermatol. 2016 May-Jun;91(3):331-5. Abstract Full text (link to original source)
  3. EFSA. European Food Safety Authority. Tolerable upper intake levels for vitamins and minerals. Scientific Committee on Food. 2006 Full text (link to original source) Full text (in our servers)
  4. Institute of Medicine (US) Panel on Micronutrients. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington (DC): National Academies Press (US); 2001. Abstract Full text (link to original source)
  5. Anderson RR. Comparison of trace elements in milk of four species. J Dairy Sci. 1992 Nov;75(11):3050-5. Abstract Full text (link to original source)
  6. Pennington JA. Silicon in foods and diets. Food Addit Contam. 1991 Jan-Feb;8(1):97-118. Review. Abstract
  7. Tanaka T, Maeda T, Hayashi Y, Imai S, Funakawa K, Nose T. [Silicon concentrations in maternal serum and breast milk in the postpartum period]. Nihon Eiseigaku Zasshi. 1990 Oct;45(4):919-25. Japanese. Abstract

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