Vitamin B12 supplements are usually taken by mouth as tablets, capsules, sprays, liquids or gummies
The goal of maintenance therapy is to sustain normal Vitamin B12 levels, as clinical guidelines say
It works differently from GLP-1 drugs, acting as a complementary mechanism: Increases fullness signals to the brain Decreases cravings and meal frequency Helps sustain steady blood-sugar control Cagrilintide has been studied both as a solo treatment and in combination with semaglutide, showing synergistic weight-loss effects beyond either alone
Two milliliters in a 30 mg vial gives you 15 mg/mL, which may be too concentrated for small doses
None of that is in dispute
Nature 649 , 487495 (2026)