Rarely, allergic reactions can occur, presenting as hives, difficulty breathing, or swelling of the face, lips, tongue, or throat
Vegans and vegetarians can consider B12 supplements or fortified foods to bridge the nutritional gap
Skin and subcutaneous tissue disorders - Reversible red colouration of the skin and mucous membranes (see above)
The menstrual cycle of women, which involves blood loss, and vitamin B12, which helps the body synthesize new blood cells, are consequently closely related
The process kicks off with a couple of key blood tests that give us the first look at whats going on inside your body
Get in touch Many people are confused about B12 and hair: can vitamin B12 cause hair loss, or does it actually prevent it