Dietary Supplements

Questions To Ask Before Taking Vitamin and Mineral Supplements

USDA. NAL. Food and Nutrition Information Center.

Ask these questions before taking a vitamin or mineral supplement to find out if it is safe, effective, necessary, and more.


MedlinePlus: Dietary Supplements

DHHS. NIH. National Library of Medicine.

Understand dietary supplements with information and resources that cover a variety of related topics. Also available in Spanish.


Dietary Supplements for Weight Loss

DHHS. NIH. Office of Dietary Supplements.

This fact sheet describes what’s known about the safety and effectiveness of many ingredients that are commonly used in weight-loss dietary supplements.


Know the Science: How Medications and Supplements Can Interact

DHHS. NIH. National Center for Complementary and Integrative Health.

This interactive tool was designed to help you better understand how medications and supplements can interact in potentially harmful ways, and why it's important to speak with your doctor about supplements.


Dietary and Herbal Supplements

DHHS. NIH. National Center for Complementary and Integrative Health.

Links to information to help understand dietary supplements, find research resources and clinical trials, and more.


MedlinePlus: All Herbs and Supplements

DHHS. NIH. National Library of Medicine.

Find resources for over 100 herbs and supplements organized alphabetically.


Office of Dietary Supplements

DHHS. NIH. Office of Dietary Supplements.

Find evidence-based information about dietary supplements. Resources include:


Questions and Answers on Dietary Supplements

DHHS. NIH. Office of Dietary Supplements.


Dietary Supplement Ingredient Database

DHHS. NIH. Office of Dietary Supplements