The only complete multi-vitamin plus more* to help support mental alertness and an energetic feeling all day long. Staying mentally and physically active is important. And having energy support throughout the day can help. That's why One-A-Day has created All-Day Energy, the only complete multivitamin with higher levels of B-vitamins to help convert food to energy plus an Extended-Release** Guarana Blend, to help your mind and body feel energetic throughout the day. *Compared to One-A-Day Essential. **Based on laboratory testing designed to simulate the digestive process. Individual results may vary.