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b12 injections every week How Often Should I Get Shots? A Guide to Your Schedule Vitamin B12 10 Week Injection
Description
Some protocols call for B12 injections every other day for two weeks initially, especially for more significant deficiencies, while monthly B12 shots are often sufficient for chronic, stable deficiencies once levels normalize

doi: 10.1080/07435800.2017.1381972
You might get them weekly at first and then less often

Vitamin B12 shots absorb more quickly since they are being directly injected into your bloodstream, and they do not have to be administered as frequently as oral tablets.

That being said, its very easy to take two supplement gummies and consume 125,000% of the recommended dietary allowance (RDA)
