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) What should you not do after a B12 shot
The tables below report the ratios documented across community reconstitution sheets for each common vial size
According to NICE guidance and standard UK clinical practice, patients with confirmed B12 deficiency and neurological symptoms typically require initial treatment with hydroxocobalamin injections
By inhibiting NNMT, 5-Amino-1MQ boosts intracellular NAD+ , enhances mitochondrial function, and helps promote the breakdown of visceral fat