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A doctor may recommend vitamin B12 shots for people at risk of a deficiency or its complications, particularly if they are unable to take oral supplements
Always recalculate when the vial size or water volume changes
The key practical consideration is picking a consistent day and time that you can maintain throughout the protocol
Chen, W., Chang, B., Li, L
A wide range of dosages is available, but they fall within a range that balances efficacy
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