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Can Vitamin B12 be used by pregnant women?

Caution is paramount during pregnancy. For the health of the expectant mother and her baby, it is important to adapt one's diet and skincare routine, even if this means temporarily giving up certain products. Can pregnant women use Vitamin B12? Learn more in this article.

Published June 18, 2024, updated on June 18, 2024, by Pauline, Head of Scientific Communication — 4 min read

Vitamin B12 and Pregnancy: A Possible Association?

The female body undergoes significant transformations during pregnancy. All organs are affected by these changes, including the skin, which is directly exposed to external elements. Therefore, it is important for expectant mothers to pay attention to the cosmetics they use, as some can be harmful to their baby's health. Indeed, it is possible for certain compounds to enter the woman's vascular system and, consequently, that of her child. As a reminder, the blood circulation between the mother and the embryo generally starts from the fourth week of pregnancy and aims to provide the baby with the essential nutrients for its development. That's why certain active cosmetic ingredients with mutagenic and/or teratogenic properties are prohibited for pregnant women.

Regarded as a safe ingredient, the vitamin B12 can be used during pregnancy.

Recognised for its soothing and antioxidant properties, the vitamin B12 is a molecule whose topical application is not contraindicated for pregnant women. In cosmetics, it is found under the INCI name "Cyanocobalamin", a name explained by the fact that cyanocobalamin is one of the most common and active forms of vitamin B12. Also present in healing ointments, this active ingredient is suitable for the sensitive skin of pregnant women.

Vitamin B12 is also found in dietary supplements and injectable solutions designed to compensate for the body's deficiencies. This use of vitamin B12 is suitable during pregnancy, a time when a deficiency can lead to complications for both the mother and her baby. Some studies have shown that a lack of vitamin B12 in pregnant women can increase the risks of miscarriages, premature births, as well as neurological (involuntary movements, irritability, tremors...), haematological (low haemoglobin and haematocrit, pancytopenia...) and dermatological (pigmentation problems) deficiencies. Vitamin B12 deficiencies are predominantly found in women who follow a vegetarian lifestyle, as this vitamin is only found in animal-derived products.

The recommended daily intake of Vitamin B12 for pregnant women is 5.5 µg.


  • SAMMAN S. & al. Vitamin B12 in Health and Disease. Nutrients (2010).

  • EINARSON A. & al. Safety of skincare products during pregnancy. Canadian Family Physician (2011).

  • DAVLUY S. & al. A Review of Vitamin B12 in Dermatology. American Journal of Clinical Dermatology (2015).

  • PAWLAK R. & al. B12 in vegan pregnant and lactating women and young children. International Journal of Birth and Parent Education (2020).

  • Thesis by Elisabeth NIEMAN. To B or Not to B? The B Vitamins and Their Influence on the Body's Largest Organ (2022).


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