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Vitamins and Minerals: How Much Should You Take? - WebMD
Listing of vitamins - Harvard Health
Daily intake of vitamins and minerals: What to know - Medical …
Nutrient Recommendations and Databases - Office of Dietary …
Vitamins and Minerals – The Nutrition Source
Should You Take Vitamins Daily? - Cleveland Clinic Health Essentials
Recommended Daily Intakes and Upper Limits for Vitamins and …
Recommended Daily Intakes for Vitamins - MSD Manuals
Vitamin and Mineral Supplement Fact Sheets - Office of Dietary ...