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This selectivity makes it invaluable for studies requiring lipolytic effects without the confounding variables of growth promotion, glucose alterations, or anabolic signalingallowing researchers to study fat metabolism in isolation

[20] For nutritional deficiency without intrinsic-factor loss, shorter courses-such as 30-100 mcg intramuscularly daily for five to ten days followed by 100-200 mcg monthly-are often sufficient

PMID: 14636871

Its critical for energy production, helping convert food into glucose to fuel your body, and essential for maintaining healthy nerve cells, including the formation of the myelin sheath that insulates them