Feel Good Formula Dietary Supplement Supports Balanced Serotonin Levels to Promote a Healthy Mood Gluten-Free Preservative-Free Soy-Free Potency & Quality Guaranteed An FDA Regulated Facility 5-HTP (5-hydroxytrptophan) is normally produced within our body and converts into serotonin, a major neurotransmitter in our brain. Vitamin B-6 supports this conversion.