Other side effects that can occur include: Excessive sweat production Rapid weight gain Pain when breathing Shortness of breath when lying down Anxiety Increased or irregular heart rate Numbness, tingling or muscular weakness Increased thirst Urinary frequency B12 injections can also cause allergy symptoms immediately after administration, like difficulty breathing, a swollen throat, mouth, or swelling of the mouth, tongue or face
B12 shots for malabsorption or dietary restriction Vegans, vegetarians, older adults, and people with GI conditions (Crohn's disease, celiac disease, pernicious anemia) commonly have inadequate B12 absorption
Standard Vitamin B12 Injection Dose for Adults The standard vitamin B12 injection dose for adults is key to managing deficiency and ensuring health
Why Is Vitamin B12 Important
Full effects may vary depending on your B12 levels and overall health
While B12 shots dont directly cause weight loss, they may help improve your energy levels and metabolism when combined with a healthy lifestyle