If you're still unsure, the best way to decide which method is right for you is to talk to your doctor
A B12 shot is an intramuscular injection that delivers vitamin B12 directly into muscle tissue, while a B12 IV infusion delivers B12 alongside hydrating fluids and complementary nutrients directly into the bloodstream through a vein
B12 Injection Needle Size & Gauge Needle size refers to the length of the needle, which determines its penetration depth and is measured in millimeters (mm)
The glucagon receptor activation at this dose level also increases resting heart rate by up to 6.7 beats per minute and may trigger dysesthesia (tingling or burning skin sensations) reported in 8.8% to 20.9% of participants at higher doses in Phase 3 trials
Individuals with a history of gastrointestinal surgery or disorders such as Crohns disease, celiac disease, or pernicious anemia may have difficulty absorbing adequate amounts of B12 and folate from their diet, and may require supplementation
2 PMC (2024)NNMT inhibition mitigates obesity-related metabolic dysfunctions in animal models