□ Instant purchase OK □ Ships within 24 hours □ Scheduled to ship via Yu-Packet Post Mini □ No price reduction DHC Vitamin B Mix 90-day supply x 2 bags, 180-day supply Vitamin B complex is an essential vitamin that assists enzymes and acts as a coenzyme when metabolizing nutrients such as sugar and protein. It is recommended for dieting because it is essential for converting lipids and carbohydrates into energy. Also, because energy is produced smoothly, it can also address fatigue.