Dietary Supplements

Find evidence-based information about dietary supplements. This collection of fact sheets presents information about dietary supplements and their ingredients. These include vitamins, minerals, herbs and botanicals, probiotics, and more.

• Background Information: Dietary Supplements
• Dietary Supplement Fact Sheets

Read answers to frequently asked questions on 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.

What dietary supplements help athletes perform better? Should you take sports supplements? Answer these questions and more using our resources.

Get information on popular types of herbal supplements, including what they are used for, if they work, and what to avoid.

Learn about the supplement label, ingredients, and health claims. 

Find information on the vitamins and minerals the body needs to work best, and tips on supplement safety. 

View consumer fact sheets, infographics, and videos to help with understanding dietary supplements, their safety, and the importance of discussing them with your doctor.

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

Find resources for over 100 herbs and supplements organized alphabetically, including apple cider vinegar, blond psyllium, collagen peptides, and more. 

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.

Department of Defense dietary supplement resource for the military community, leaders, healthcare providers and DoD civilians.