100% grapefruit juice supplies thiamin, providing 8% of the Daily Value in a 250 ml serving. Smaller amounts can be found in a serving of whole grapefruit (1/2 medium) (4% DV).
- Eat grapefruit for energy! They deliver thiamin, a water-soluble B vitamin that is associated with the action of many of the body’s enzymes and the conversion of food into energy.1,2
- Very little thiamin is stored in the body, and because it is used up quickly, frequent consumption of thiamin from the diet is necessary.1,2
- Health Sheet for Professionals.Office of Dietary Supplements.National Institutes of Health. https://ods.od.nih.gov/factsheets/Thiamin-HealthProfessional/
- Food and Nutrition Board, Institute of Medicine.Dietary Recommended Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline.Washington, D.C.:National Academy of Sciences; 1998:58-83.