One possible explanation is that your body is undergoing an adjustment period
Combined with lifestyle changes, Vitamin B12 injections can help boost your energy levels and speed up your metabolism to help you lose weight
Dosage and Administration: Intramuscular injection: one dose, 10-20ml for horses and cattle
19 Early studies: There were studies in the 1950s and the1960s that showed that oral vitamin B 12 could be absorbed by patients with pernicious anemia and could lead to resolution of the anemia
not primarily appetite-driven (OUP Academic) Expected weight loss (this is where many people get misled) In major obesity trials: Semaglutide 2.4 mg weekly: ~14.9% mean weight loss at 68 weeks (STEP-1) (PubMed) Tirzepatide: ~15.0% to ~20.9% mean weight loss at 72 weeks , dose-dependent (SURMOUNT-1) (PubMed) AOD-9604s best-known human signal is kilograms, not double-digit percentages , and later studies did not sustain a strong obesity-drug profile
[DOI] [PubMed] [Google Scholar] 31.Fredrikson G, Tornqvist H, Belfrage P