b12 injections versus oral supplements Vitamin vs. Supplements: What's the Difference? Treatment:3 Months

Atrophic glossitis in pernicious anemia patients can be treated to normal in two weeks by intramuscular injection of vitamin B12 - PMC

While the injectable route of administration in Semaglutide / Cyanocobalamin Injection bypasses the need for gastrointestinal absorption, patients receiving high-dose or long-term metformin therapy may have increased B12 requirements that should be considered when determining appropriate dosing

CAT

Treatment:3 Months

Vitamin B12 shots offer a direct route to repletion if you compare options