b12 level after injection Shots Dosage for Adults: How Much and How Often B12 Injection Dose: 7 Guidelines
Description
Many users find that metabolic improvements persist for 2-4 weeks after discontinuing treatment, suggesting lasting changes in cellular function

Serum studies should include a complete blood count and serum electrolytes, including calcium and magnesium
Sci Rep (2016) 6:18925

these are not personal-result promises
