Creche Guard multivitamin and immune syrup may support the immune system. Vitamin B1 supports brain function. Vitamin B2 supports the production of energy. Vitamin B3 supports energy production and the regulation of blood sugar. Vitamin B5 supports energy production and the immune system, vitamin B6 supports a healthy nervous system and immune system, vitamin B12 supports optimal mental function and the insulation of nerves impulses, vitamin D supports immunity, vitamin E is an antioxidant that supports a healthy immune system.