The effective cost per therapeutic dose likely favors injection when bioavailability discounting is applied
The side effects of unapproved oral or injectable peptides are unknown, but they can be contaminated with heavy metals or be of questionable purity
Known deficiency, prior low B12, fatigue follow-up, diet-related risk, and histories that can affect absorption are the most common reasons patients ask for B12 injections
However, many people who are deficient are simply this way because their bodies are unable to absorb Vitamin B12 efficiently
Why 2 mL is the default: it produces whole-number unit readings at the most commonly researched doses, which removes the guesswork from drawing a partial tick mark
Never stop your diabetic medication without a physicians advice