Exercisers may have slightly increased requirements for some of the B vitamins, including vitamins B2, B6, and B5, athletic performance can suffer if these slightly increased needs are not met.(more)Digestive HealthSee Related Concerns (2)CloseWhat are Star Ratings?Indigestion, Heartburn, and Low Stomach AcidityDose: Refer to label instructionsPeople with achlorhydria (no stomach acid) or hypoch