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When Oral Supplements Are Sufficient: Mild Deficiency Cases: Dietary insufficiency without absorption issues Preventive supplementation Cost-conscious approach No underlying digestive problems Recommended Dosage: 250-1000 mcg daily for maintenance When B12 Injections Are Superior: Severe Deficiency or Absorption Issues: Pernicious anemia Digestive disorders affecting absorption Rapid correction needed Previous failed oral supplementation The Science: Intramuscular B12 injections bypass the digestive system entirely, providing 100% bioavailability compared to 1-5% from oral supplements in deficient individuals
B, Early stage of endothelial destruction and minimal organizing thrombosis
Recommendation: Take 1 spray in each nostril
Alvarez, A
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