Supplements that boost white blood cells include vitamins A, B6, B12 and C as well as alkylglycerol, which is derived from ratfish liver oil, according to Dr. Ronald Hoffman. Chromium polynicotinate potentially enhances the ability of white blood cells to respond to infection.
Vitamin A specifically boosts white blood cell function, whereas B6 supports the thymus, the immune system organ. Vitamin B12 helps white blood cells to mature and multiply, and vitamin C is what white blood cells use to fight infections. Alkylglycerol promotes the production of white blood cells. Dr. Hoffman also suggests a correlation between protein-calorie malnutrition and a compromised immune system.