how often should you have your b12 injection Are Shots Safe? Royal Palm Beach Medical Group How Long Does B12 Injection
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It may also be perceived as more painful because it can take slightly longer to administer

B12 injections can help

For pregnant women with dietary deficiency (such as vegans or vegetarians), oral cyanocobalamin at 50-150 micrograms daily is typically recommended, in line with British National Formulary (BNF) guidance

B12 is water-soluble, with excess typically excreted in urine, and anxiety is not listed as a recognised adverse effect in MHRA product information

Take 3-5 seconds to complete the injection rather than pushing quickly