Forms of Vitamin B12 and Who They Suit B12 Form How Its Taken Best For Tablets/Capsules Swallowed with water Mild deficiency, general wellness, everyday convenience Sublingual tablets Dissolve under the tongue People who may not absorb well through the gut Nasal spray Sprayed into the nostril Those who dislike pills or injections Injections Given in clinic or at home (prescribed) Confirmed deficiency, absorption issues, and faster results Oral tablets and capsules are convenient, but they must pass through the digestive system, which can limit absorption in people with gut issues, low stomach acid, or certain surgeries
They are not for human or animal consumption, administration, therapeutic use, diagnostic use, or personal use
How to give yourself a B12 shot at home: Methylcobalamin vs Cyanocobalamin If you are using B12 shots its also very important that you use the correct form of vitamin B12
Common assay concentrations range from 100 nM to 10 M, depending on cell type and endpoint
Published clinical research has characterised the compound in controlled trials: a Phase 2 obesity trial reported dose-dependent body-weight change in the study population (Jastreboff et al., 2023), and a separate Phase 2 trial investigated the GIP/GLP-1/glucagon agonist in people with type 2 diabetes (Rosenstock et al., 2023)
Vaccinations: Patients on biologic or immunosuppressive therapy need specific vaccines (avoid live vaccines)
