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does b12 injections cause itchy head Strange Rash/ Low : r/B12_Deficiency Oral Vitamin B12 Side Effects
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A less than optimal production of red blood cells may lead to a lowered oxygen carrying capacity of the blood, resulting in insufficient muscle perfusion

Whilst injections bypass gut absorption, conditions like active Crohn's disease or coeliac disease may cause increased metabolic demands that could influence how quickly B12 is utilised

Im starting to feel like I will never feel normal again

Keep a fresh, batch-matched COA on hand
