Stop Surviving. Start Moving. Why Choose MagFit?. Acetyl-L-Carnitine (500mg): Enhances cognitive function and transports fuel to your cells for improved focus and mood. B-Complex Vitamins: A full spectrum (B1, B2, B3, B5, B6, B12, and Folate) to support energy-yielding bolism and healthy skin, hair, and nails.