Prioritize protein: 0.8-1.0g per pound of body weight
Intramuscular vs Subcutaneous Parenteral administration of vitamin B-12 via injection has been standard protocol for decades, according to the Centers for Disease Control and Prevention
It may even affect insulin levels
Advantages of B12 Injections Potential Drawbacks Oral B12 Supplements: The Convenient Alternative Oral vitamin B12 supplements offer a convenient, self-administered treatment option available in various forms, including tablets, capsules, and sublingual preparations
Evidence-based : Ensuring clinicians understand the difference between serum B12 levels and clinically active B12 stores, and other suitable tests to determine deficiency as well as symptom resolution with sufficiently frequent treatment
The NHS hypokalaemia overview explains why it matters, and clinical references such as StatPearls on B12 deficiency treatment specifically flag monitoring potassium during the early loading phase in people who were severely deficient