long term side effects of b12 injections How Do The Last Why do I feel so bad after a B12 injection? Vitamin B12: Symptoms, Dosage &

Individuals typically notice a reduction in fatigue within 48 to 72 hours after a B12 injection

Significant satiety effect of bombesin in lean but not in obese subjects

Functions of vitamin B12 and folate Vitamin B12 (cobalamin) and folate (vitamin B9) are vitamins that serve important functions in the human body

Differentiating from Other Conditions Neurological signs and symptoms can be vitamin B12 deficiency associated or due to other causes such as: Pernicious anemia Syphilis Neurosyphilis Human immunodeficiency virus (HIV)-associated vacuolar myelopathy Toxic neuropathies Tropical myeloneuropathy Your healthcare provider can make a proper diagnosis based on your symptoms, medical history, physical exam, and laboratory test findings

Advertisement Article continues below this ad Gastrointestinal Reactions A common question people have when they are prescribed vitamin B12 injections is can B12 shots make you sick

Some individuals may struggle to absorb B12 through diet alone especially those with certain dietary restrictions or medical conditions