Dietary Supplement Energy Production Cardiovascular Health Nerve Function Gluten-Free No Artificial Preservatives An FDA Regulated Facility Potency & Quality Guaranteed Providing the highest quality nutritional supplements since 1965. Tri-B® provides a blend of folic acid and vitamins B-6 and B-12. Research shows that these vitamins help maintain normal blood levels of homocysteine promoting cardiovascular health. Tri-B also plays an important role in energy production and nerve function.