b12 injections administration How to Give at Home to Yourself · PA Relief Best Vitamin B12 Injection Site:
Description
Folate, vitamin B6, and choline play essential roles in methylation and homocysteine regulation

I said I work from home so can come anytime/any day but this was met with "they're too busy all next week" and could I wait 30 minutes and they could do it now
Participants in a study, or even researchers themselves, generally prefer a pill or capsule over an injection

Each has its unique advantages, and your choice depends on what you aim to achieve