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Vitamin B12 in Australia: evidence and prices
TL;DR
Vitamin B12 is an essential nutrient. The Australian/NZ Nutrient Reference Values set no upper limit for B12 because there isn't enough data. NIH ODS notes some medicines, including metformin and acid-reducing medicines, may affect B12 levels, so ask your GP if you take them.
Upper limit
The Australian/NZ NRVs say there are insufficient data to set an upper level of intake for vitamin B12. [1]
Medicines
NIH ODS notes that some medicines, including gastric acid inhibitors and metformin, may affect vitamin B12 levels. [2]
Prices in Australia
Coles online, listed shelf price checked 15 Oct 2026 (search results; specials marked). Prices change often. This is not an endorsement or a recommendation, and no affiliate links are used. Chemist Warehouse, Priceline and iHerb: price check pending.
| Product (as listed) | Price |
|---|---|
| Blackmores Vitamin B12 (150 pack) | A$12.50 (special; was A$25.00) |
| Nature's Own Vitamin B12 Tablets 1000µg (120 pack) | A$29.50 |
| Swisse Ultiboost High Strength Vitamin B12 (60 pack) | A$19.50 |
FAQ
Do vegans need B12?
Ask your GP or a dietitian. NIH ODS discusses groups at risk of low B12.
Sources
- Nutrient Reference Values for Australia and New Zealand: Vitamin B12 (NHMRC, Eat For Health)
- Vitamin B12 – Fact Sheet for Health Professionals (NIH ODS)
Sources checked 15 Oct 2026. Pending human review before publication.