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
Vigorous shaking should be strictly avoided, as mechanical stress can disrupt peptide bonds and compromise integrity
Theyre also good for people with special diets or health issues
Adequate protein intake during weight loss preserves muscle mass more effectively than any supplement
If you are suffering from joint pain, then vitamin B12 supplementation should not be your first port of call
Now it's time for the practical application
