do b12 injections cause weight gain Vitamin Injections: What You Need To Know How B12 Injections Affect Your

Common adverse effects include: Injection site reactions pain, redness, swelling, or bruising at the intramuscular injection site Gastrointestinal disturbances nausea, diarrhoea, or abdominal discomfort Headache and dizziness particularly following initial doses Skin reactions including rash, pruritus, or acne-like eruptions Flushing temporary redness of the skin Chromaturia red-coloured urine (harmless but can cause concern if unexpected) Less common but more serious reactions include: Hypersensitivity reactions ranging from mild urticaria to anaphylaxis (rare but potentially life-threatening) Hypokalaemia particularly during initial treatment when rapid cell production occurs [5] [16] Temporary changes in blood counts during correction of deficiency Interference with laboratory tests primarily with high-dose IV hydroxocobalamin used for cyanide poisoning, not typically with standard 1mg IM replacement doses Cautions and contraindications: Hypersensitivity to cobalt or vitamin B12 Cyanocobalamin should be avoided in Leber's hereditary optic neuropathy [2] [17] Chloramphenicol may reduce the haematological response to B12 therapy Patients receiving B12 injections outside clinical necessity face unnecessary risks without proven benefit

Crash dieting, chronic stress, poor sleep, tight hairstyles, frequent bleaching and excessive heat styling can all make hair fall worse

Sublingual (under-the-tongue) forms dissolve in your mouth, theoretically enhancing absorption by allowing some B12 to enter the bloodstream through mucous membranes rather than relying solely on digestive uptake

We offer comprehensive health assessments, including blood tests to determine your B12 status

Established benefits of B12 therapy: Treatment of documented deficiency: Intramuscular hydroxocobalamin is the standard NHS treatment for pernicious anaemia and other causes of B12 deficiency, effectively reversing haematological and neurological complications