B Plex is a specialised formulation of B vitamins which excludes vitamin B12 & folic acid. It may be that certain metabolic types such as high histamine formers tolerate this formulation more readily.• Bio Care B-Plex contains magnesium to support the function of the nervous system • Magnesium assists the formation of essential metabolic enzymes in the body • Bio Care B-Plex contains no vitamin B12 or folic acid • Bio Care B-Plex is suitable for Vegetarians & Vegans • Bio Care B-Plex capsules may be opened if desired