Memory loss is one symptom you dont want to neglect: The neurologic complications of B12 deficiency are often reversible, but not always, warns Green
Rare: may affect up to 1 in 1,000 people Acniform and bullous eruptions (acne-like and blistery skin eruptions) Not known: frequency cannot be estimated from the available data Headache, dizziness Nausea (feeling sick), vomiting, diarrhoea Malaise (feeling unwell) Rash, itching Injection site reactions including injection site pain, injection site erythema, injection site pruritus, injection site induration, and injection site swelling (Reactions at the site of the injection) Exanthema (a widespread skin rash) Chromaturia (unusual coloured urine) Fever Hot flushes (a feeling of intense heat with sweating and rapid heartbeat) Chills (feeling of coldness accompanied by shivering) Paraesthesia (feeling of pins and needles) Tremor (tremble or shakes) Hypokalaemia (decreased potassium levels in the blood) Reactive thrombocytosis (body produces too many platelets) Reporting of side effects If you get any side effects, talk to your doctor, pharmacist or nurse
Vitamin B12, Sleep Deficiency and Sleep Disorders Because B12 levels tend to decline rather slowly, a true B12 deficiency isnt the most common nutrient deficiency and can take years to develop
Where they diverge is what they are and where they sit on the regulatory ladder
Extended-release tablets release the vitamin slower, which might help it stay in the body longer
