This product will be shipped by [page="merchant_info"]LİFECELL[/page] . Free returns within 15 days. For detailed information, click [page="return_conditions"][/page]. LifeCell B12 Forte + B Complex explains the important roles of vitamins B1- B6- B7- B9 and B12 on health. Vitamin B1 – has a variety of functions, from energy production to nervous system health. Vitamin B6 is important for protein metabolism, nerve conduction and the immune system. Vitamin B7 is effective in various areas, from skin-hair-nail health to metabolism regulation. Vitamin B9- plays an important role in DNA synthesis- cell growth and pregnancy. Vitamin B12 is necessary for red blood cell production, nervous system health and energy metabolism. Adequate intake of these vitamins is important for general health and especially for the nervous system, immune system and metabolic functions.