pernicious anemia vitamin b12 by intramuscular injection because anaemia: recognition, diagnosis and management Vitamin B12 Deficiency: Recognition and

Adding B12 would create a different product requiring separate approval

However, these warning signs represent serious underlying cellular dysfunction that can progress to irreversible complications including subacute combined degeneration , cognitive decline , and neural tube defects in developing pregnancies

Common Side Effects Pain or swelling at the injection site Mild diarrhea Itching or rash Serious Side Effects Severe allergic reactions (rare) Dizziness or fainting Unusual tiredness or weakness Precautions Disclose any allergies or existing medical conditions before use

Acute blood loss due to surgical interventions, trauma or childbirth, and prolonged, low-severity blood loss such as stomach ulcers and menstruation can also cause low hemoglobin

Those Who Have Had Weight Loss Surgery : Procedures like gastric bypass alter the digestive system and can interfere with B12 absorption

"Methylmalonic Acid and Homocysteine as Indicators of Vitamin B12 Deficiency in Patients with Gastric Cancer after Gastrectomy"