text: So many and answers- I have systemic lupus along w/other health problems and take a b complex daily.  It's a liquid taken sublingually because B12 isn't absorbed well thru the stomach.\nSublingual B Total™\nLiquid B Vitamin Supplement is the one I use and recommended by my doctor.\n\nVitamin B12 - helps maintain healthy nerve cells and red blood cells.  Works in close partnership with folic acid in synthesis of the building blocks for DNA and RNA. Essential for the integrity of the maintenance of the nervous system and for the production of energy producing molecules. Non toxic at 1,000 mcg daily for many years.\n\nFolic Acid (folate) - a non-toxic nutrient that protects our chromosomes from DNA damage. Also helps with depression.  No noticeable side effects.\n\nVitamin B2 (riboflavin) - required for cell growth and release of energy, formation of red blood cell, and synthesis of antibodies.\n\n\nVitamin B3 (niacin) - stabilizes cell membranes, insures proper circulation and maintains healthy skin. Aids in the function of the nervous system and helps to reduce cholesterol.\n\nVitamin B5 (panthothenic acid) - a non toxic nutrient needed to breakdown fat to covert into energy. An anti-stress vitamin.                        \n\nVitamin B6 - needed for the synthesis of neurotransmitters such as serotonin and dopamine. These neurotransmitters are required for normal nerve cell communication.