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Medicines cyanocobalaminQuestion & answer

cyanocobalamin · Medicine question

Can cyanocobalamin be used during pregnancy or breastfeeding?

iatroX medicinesMedicine guide reviewed 19 August 2026

The answer

Answer

It can be used during pregnancy when vitamin B12 replacement is indicated and is compatible with breastfeeding.

Sources for this answer

NHSNHS · NHS medicine guidance
UK Teratology Information ServiceUK Teratology Information Service · Reputable Web
Cytamen 1000mcg Injection — Current selected SmPC

emc · Summary of Product Characteristics

General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.

The full medicine guide

cyanocobalamin

Read the wider context, including uses, precautions and the sources behind this medicine guide.

Read the cyanocobalamin guide

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More questions about cyanocobalamin

Is cyanocobalamin the same as vitamin B12?Why might tablets be unsuitable for some causes of deficiency?Does cyanocobalamin contain cobalt?Can it cause a delayed allergic reaction?Do the selected tablets contain lactose?