Size and growth in 33 countries and regions, with clinical trials and research from public sources.
Market size in 2023 · growth a year to 2033
Active trials by country (ClinicalTrials.gov)
See every trial on ClinicalTrials.gov (opens in a new tab)"–" means we have no size for that place yet. 2033 values are projected from the 2023 size and the CAGR. Regions count only the countries we report on for trials.
Amneal Pharmaceuticals LLC
Apotex Inc
Biocon
Bristol Laboratories Ltd
Cadila Healthcare Ltd
Dr Reddy’s Laboratories Ltd
Endo International PLC
Hikma Pharmaveuticals
Merck & Co,Inc
Sanofi
The world Vitamin B12(Cobalamin) market was worth about $300 Mn in 2023 and is projected to reach $512 Mn by 2033, growing 5.5% a year (CAGR).
The US is the largest of the 24 countries we cover, at $126 Mn in 2023. India grows fastest, at 8.5% a year.
ClinicalTrials.gov lists 275 active trials worldwide (recruiting, about to start or running), most of them in the US, as of 10 Nov 2026.
PubMed lists about 6,116 papers on the topic since 2021.
Sources: market size and growth: Acuitas Health Analytics research (2023 base year, forecasts to 2033). Trials: ClinicalTrials.gov. Research: PubMed (US National Library of Medicine). Fetched 10 Nov 2026. Trials and papers are found by search words, so counts are a guide.