Biocare Histazyme Plus provides nutrients that may be useful during seasonal changes when pollens and environmental factors place extra pressures on the body's nutritional requirements. The nutrients in Histazyme are required for the maintenance of a healthy immune system. Vitamin C is included to support immune function, calcium is involved in histamine activity in the body, lysine is, needed for tissue repair and enzyme and antibody production, zinc is required for cell growth and is involved in healing and, together with manganese, plays an important role in helping to maintain normal histamine levels in the body. Vitamin B6 is necessary for the production of antibodies and red blood cells. Suitable for vegetarians and vegans. Contra-indications: Not suitable for use during pregnancy or if pregnancy is planned.