neelakantan et al. biochemical pharmacology 2019 5-amino-1mq 5-Amino-1MQ – Y&P Labs 5-Amino-1MQ is a perfect example

[1] [2] Factors That Affect How Fast B12 Injections Work Multiple variables influence how quickly you will respond to B12 injection therapy, making it difficult to predict an exact timeline for any individual patient

What are you waiting for

That is 20 units on a U-100 syringe from a 50 mg vial mixed in 2 mL

For these patients, oral B12 supplementation (1,000-2,000 mcg daily sublingual methylcobalamin) provides comparable B12 repletion without injection

Pregnant or breastfeeding women should consult their physician before use

That being said, coverage for Vitamin B12 injections varies among insurance providers and may depend on medical necessity