21st Century B Complex with Vitamin C is a dietary supplement containing essential B vitamins combined with Vitamin C. This formulation comes in a bottle of 30 capsules and is designed to support energy metabolism, immune function, and help reduce fatigue. As this is a vitamin supplement, it should be stored in a cool, dry place away from direct sunlight. The product comes in a white bottle with a secure cap to maintain freshness. While specific dosage information is not provided in the original description, vitamin B complex supplements are typically taken daily with food. Always consult with a healthcare provider before starting any supplement regimen.