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Dietary Supplement Energy Production Cardiovascular Health Nerve Function Potency & Quality Guaranteed An FDA Regulated Facility Gluten-Free No Artificial PreservativesCarson - Providing the highest quality nutritional supplement since 1965. Tri-B provides a blend of folic acid, and vitamin 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.