AOR Pro B Complex Details Check out TRUMARK TRU-B Methylated B-Complex Fatigue, Nutrient Deficiencies, Mitochondrial Dysfunction. PRO B-Complex contains essential B vitamins that perform important roles in the body such as: promoting metabolic and nerve health, providing stress support, and more essential functions. B-complex supplementation is useful for preventing deficiencies associated with blood sugar regulation, neurological disorders, anemia, mood, neuropathy, stress, and neural tube birth defects. B-complex supplementation also heavily promotes metabolic support, diabetic support, and stress management, among other key functions. PRO B-Complex delivers the most biologically active and efficient forms of these vitamins in balanced doses, ensuring maximum benefits.