is oral b12 as effective as injections Compounded Hydroxocobalamin (Vitamin B12) Injection B12 Shots: Benefits, Uses, Safety,
Description
Factors Affecting Dosage Requirements Many things can change how much B12 someone needs

[11] Women from South Asian backgrounds show higher rates of B12 deficiency in UK populations and may benefit from assessment

AACR Meeting Abstracts (2018) 78:4563

Supervision is not a formality, it is the core of what you are paying for

Do not double up to make up for a missed dose

You don't have to figure this out through trial and error