維生素 B12 (鈷胺素)

Do all vitamin B12 supplements contain the same form of B12?

No. B12 supplements may contain cyanocobalamin or methylcobalamin. Products also vary in dosage, serving size, format and additional ingredients; review the Supplement Facts panel.

Do vitamin B12 supplements contain additional nutrients?

Some contain B12 alone, while others combine it with additional B vitamins or other nutrients. Review the Supplement Facts panel to compare formulations.

What's the difference between cyanocobalamin and methylcobalamin?

Cyanocobalamin and methylcobalamin are two forms of vitamin B12 commonly used in supplements. Product formulations vary by brand; review the Supplement Facts panel.

What forms does vitamin B12 come in?

B12 is available in tablets, capsules, sublingual drops, lozenges and sprays. Product availability varies by brand.

What should I know before choosing a vitamin B12 supplement?

Review the product label for directions for use and precautions. If you have questions about whether B12 is appropriate for you, consult your healthcare provider.