b12 liquid injectable Vitamin B-12 3000 mcg Injection 250mL an active form of the vitamin. Sandoz Vitamin B12 Injectable Solution
Description
Although, B12 could be part of it

Association of Glucagon-Like Peptide-1 Receptor Agonist Use With Risk of Gallbladder and Biliary Diseases: A Systematic Review and Meta-analysis of Randomized Clinical Trials
The shots correct anemia faster than oral supplements, often normalizing blood counts within weeks

Metformin, a medication for individuals with type 2 diabetes mellitus, was found to decrease vitamin B 12 absorption possibly by tying up free calcium required for absorption of the IF-B 12 complex (143)

validation, I.B
