To name just a few: fatigue, breathlessness, dizziness, diarrhoea, dementia, depression, tachycardia, swollen and sore joints, blurred vision, pain and numbness (or burning) in hands and feet, sore muscles, sore tongue, inability to walk (later)
Physical symptoms may include weakness, pale or yellowish skin, numbness or tingling in extremities, balance difficulties, mood changes including depression or irritability, and tongue inflammation
With minimal downtime, you can enjoy the benefits of improved energy, focus, and vitality right away
For individuals receiving B12 injections for severe deficiency, there have been isolated reports of hypokalaemia (low potassium) during initial treatment, as rapid cell production consumes potassium