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Pregnancy, breastfeeding and fertility while having hydroxocobalamin - Brand names: Cobalin-H, Neo-Cytamen

Hydroxocobalamin and pregnancy

Hydroxocobalamin can be used during pregnancy.

It's important that a vitamin B12 deficiency is correctly treated to make sure that you and your baby are healthy.

Hydroxocobalamin and breastfeeding

You can have hydroxocobalamin while you're breastfeeding.

Hydroxocobalamin is a natural part of breast milk. When you have hydroxocobalamin injections as a supplement or treatment, it passes into your breast milk in low amounts and helps your baby to stay healthy.

If your baby also has vitamin B12 deficiency, they will still also need treating themselves.

If you notice your baby is not feeding as well, or you have any concerns about your baby, contact your doctor, pharmacist, health visitor or midwife.

Hydroxocobalamin and fertility

There's no evidence to suggest that taking hydroxocobalamin affects fertility in either men or women.

Non-urgent advice: Tell your doctor if you're:

  • trying to get pregnant
  • pregnant
  • breastfeeding

Find out how vitamin B12 treatments such as hydroxocobalamin can affect you and your baby during pregnancy on the Best Use of Medicines in Pregnancy (BUMPS) website.

Page last reviewed: 13 October 2022
Next review due: 13 October 2025