Solaray Mega Vitamin B-Stress is specially formulated for people exposed to stress. B Well B vitamins are necessary for proper metabolism and may support hair & skin, immune system function, and red blood cell formation. ' B' Supported Designed to release half of the ingredients rapidly and the other half gradually over a period of up to 8 hours, which may help extend the availability of these vitamins to the body over long periods of time. Based on in-vitro dissolution tests designed to simulate Solaray began formulating herbal blends for specific health benefits in 1973. Over the years, the company has become a trusted full-line dietary supplement brand found in health and natural food stores all around the world. Our Vitamin B-Complex, Two-Stage Timed-Release supplement does not contain any artificial colors, flavors, or preservatives and is lab-verified for identity, potency, and purity.