NFH B‑Complex SAP Details B‑Complex SAP is a synergistic combination of essential B vitamins designed to support healthy metabolism. B vitamins are water-soluble cofactors that are vital for energy production, formation of red blood cells and tissue, nutrient metabolism, and normal function of the immune system. B vitamins work together to improve stress levels and the proper functioning of the nervous system. B‑Complex SAP contains active forms of vitamins B2 (riboflavin-5′-phosphate) and B6 (pyridoxal-5′-phosphate) for high bioavailability.