Manganese overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Table of Contents| ods.od.nih.gov
This is a general overview. For more in-depth information, see our health professional fact sheet.| ods.od.nih.gov
Vitamin K overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Information on weight loss dietary supplements. Learn about their use, safety, health effects, and sensible ways to lose weight here.| ods.od.nih.gov
Vitamin D overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Vitamin A is important for eyesight and immunity. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Overview for health professionals of dietary supplements and COVID-19. Research evidence, safety, and use here.| ods.od.nih.gov
Magnesium helps nerves and muscles function. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Vitamin E is an antioxidant. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
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Iron helps make hemoglobin in red blood cells. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
This external Web site provides additional information that is consistent with the intended purpose of the ODS Web site; however, the external Web site is subject to change beyond ODS's control.| ods.od.nih.gov
Phosphorus overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Selenium is needed for reproduction and thyroid function. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Use of Dietary Supplements| ods.od.nih.gov
Riboflavin (Vit B2) overview for health professionals. Research health effects, dosing, sources, deficiency, side effects, and interactions here.| ods.od.nih.gov
A| ods.od.nih.gov
Folate (folic acid) helps make DNA. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Vitamin K helps with blood clotting and healthy bones. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Calcium helps build strong bones. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Selenium overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Vitamin K overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Riboflavin (Vitamin B2) helps turn food into energy. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Overview for health professionals of the efficacy and safety of ashwagandha for stress, anxiety, and sleep.| ods.od.nih.gov
Potassium is needed for muscle, kidneys, and heart function. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Vitamin E overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Important things to know about dietary supplements. Learn about their label information, effectiveness, safety, risk, quality, and regulation here.| ods.od.nih.gov
Vitamin B12 helps keep nerve and blood cells healthy. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Zinc helps the immune system and helps make proteins and DNA. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Vitamin C (ascorbic acid) is an antioxidant. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Omega 3 fatty acids overview for health professionals. Research health effects, dosing, sources, deficiency, side effects, and interactions here.| ods.od.nih.gov
Vitamin D helps maintain strong bones. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Dietary Reference Intake (DRI) Reports and Tables| ods.od.nih.gov
Iodine overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Vitamin B6 (pyridoxine) overview for health professionals. Research health effects, dosing, sources, deficiency, side effects, and interactions here.| ods.od.nih.gov
Omega 3 fatty acids are needed for healthy cell membranes. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Iron overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Choline supports brain and nerve functions. Learn how much you need, good sources, deficiency symptoms, and health effects here.| ods.od.nih.gov
Folate (folic acid) overview for health professionals. Research health effects, dosing, sources, deficiency, side effects, and interactions here.| ods.od.nih.gov
Magnesium overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Zinc overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Vitamin C overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Calcium overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Potassium overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Vitamin B12 overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Vitamin A overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov
Choline overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.| ods.od.nih.gov