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These extremely rare side effects include: Reactive thrombocytosis during the first week of use in megaloblastic anaemia Hypersensitivity reactions including: rash, itching, exanthema, antibodies to HYDR0XOCOBALAMIN-transcobalamin II Anaphylaxis Hypokalaemia Headache, paraesthesia, tremor Irregular heartbeat (arrhythmias secondary to hypokalaemia) Nausea Vomiting Diarrhoea Fever, chills, hot flushes, dizziness, malaise, pain and / or swelling at the injection site Acne Abnormal colouration of the urine (chromaturia) B12 injections work quickly
B12 is essential for energy production, nerve function, and mood regulation, yet deficiency is surprisingly common and often goes undiagnosed
How Often Will I Need The Injection
Pagnon, J
The subcutaneous layer is thicker in people who have more body fat and therefore patients with a higher BMI may need a longer needle to adequately get into the skeletal muscle
