side effects of b12 injections in humans Why do I feel worse after a injection? 10 Skin Signs You're Low

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People with symptoms of vitamin B12 deficiency It is a good idea for anyone with the following signs and symptoms of a vitamin B12 deficiency or pernicious anemia to consult a doctor: People with gastrointestinal issues Conditions that affect the gastrointestinal tract may affect vitamin B12 release or absorption, including: pernicious anemia, which can lead to gastric atrophy, or damage to the stomach fish tapeworm infestation bowel or pancreatic cancer folic acid deficiency overgrowth of bacteria in the small intestine diabetes thyroid disease Crohns disease celiac disease chronic pancreatitis People who have undergone gastrointestinal surgery, including weight loss, may have fewer cells necessary to secrete stomach acid and intrinsic factor

Serious adverse effects are extremely rare

Current studies mainly focus on combinations with dietary control, exercise, and other weightloss agents, aiming to enhance efficacy and reduce side effects

After a successful injection, apply pressure to stop any bleeding