b12 aqua injection VITNEURIN AQ INJ B1-B6-B12 at ₹ 119/piece | Vitamin & Multivitamin Injections in Nagpur This prescription form of Cyanocobalamin has 1000 mcg/m B-29 AQ PFS Injection, 1500
Description
The oral dose was ~30% of the intravenous dose

Batista, Kamila S, et al

Each works through a different mechanism, and the evidence levels are very different

Keep it out of the reach of children, and follow any specific storage instructions provided by your healthcare provider

PMID 29216732

But you might need them more often if you have more serious symptoms, like nerve problems, or your pernicious anemia is serious
