Inositol, a carbohydrate that helps insulin work correctly, also improves the effectiveness of serotonin and dopamine within the brain. These neurochemicals control our moods, particularly our ability to feel calm. Inositol also regulates hormones. Inositol may also reduce brain fog and improve mental focus. Vitamin B-6 is required for steady and stable production of neurotransmitters, hormonal regulation, and a healthy immune system.