b12 injection histamine intolerance SYMPTOMS Histamine Intolerance – Symptoms, Tests,
Description
People with Lebers hereditary optic neuropathy, a rare inherited optic nerve disorder, may be at risk of severe optic nerve damage with cyanocobalamin

Sometimes pain comes down to technique - injecting too slowly or at the wrong angle can increase discomfort

During initial treatment of severe deficiency, hypokalaemia (low potassium) can develop

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This essential vitamin also promotes brain health and improves mood
