Topical application, the most common route of use, has demonstrated excellent safety with minimal adverse effects reported
Signs and symptoms include (but are not limited to): Extreme tiredness (fatigue) Tiredness / lack of energy Pale skin Numbness and / or tingling (paraesthesia) Feeling faint Noticeable heartbeat (palpitations) Feeling short of breath Loss of appetite Ringing in your ears (tinnitius) Unintended weight loss Changes in your vision A yellow tinge to the skin Depression Irritability Changes in the way you feel, behave, and think ('brain fog') A decline in mental function, such as changes to your memory, judgement and understanding (dementia) How long do B12 injections last
Together, they create a more favorable environment for healing, circulation, and structural repair throughout the body
If that sounds scary to you, youre not alone
Still, we should be careful
Nature 508(7495):258-262