Vitamin B12 deficiency can cause a range of symptoms, affecting energy levels, nerves, and cognitive functions such as; Feeling tired or weak, even after rest, Shortness of breath or dizziness, ...

Is your hair feeling dull, weak, or falling out a lot more than usual? Check your vitamin B12 levels. While you search for ...

Allergic reactions to vitamin B12 are rare, but real. The reason may sound strange, but it's true - an allergy to cobalt.