Healthy Living

Dietary Supplements

Choose a preferred language


What are dietary supplements?

A dietary supplement is anything you add to your regular diet to improve your health or healing. They can include:

  • Vitamins

  • Minerals

  • Herbs

  • Homeopathic medicines

  • Some food products

Dietary supplements can be bought at grocery stores, health food stores, and pharmacies. They come in many forms, such as:

  • Pills

  • Capsules

  • Liquids

  • Meal replacement bars

  • Cookies

  • Powders

  • Elixirs

  • Teas


Who may need dietary supplements?

For most people, nutritional needs can be met by a balanced diet. Some people who may need supplements include:

  • Pregnant or nursing women

  • Young children or older adults

  • Vegetarians and vegans

  • People who need restricted diets

  • People who abuse alcohol

  • People who are ill or frail

  • Postmenopausal women


Dietary supplement safety

Taking large doses of supplements has not proven to be effective. In fact, it can be toxic. The National Institutes of Health does not advise taking vitamins or nutrients over the recommended daily allowances (RDAs).

Dietary supplements are not regulated by the FDA like medications. To help ensure quality, identity, purity, strength, and composition of dietary supplements, choose a supplement that has been tested by an independent third party, such as ConsumerLab.com, NSF International, or U.S. Pharmacopeia.

Always check with your healthcare provider before taking any supplements. Some may interfere with prescription medicines you take. Tell your provider what supplements you take and why. They can make sure your health concerns can be addressed.

Featured in

© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
Related Articles
Read article
Wellness
Calcium

Learn the medical uses, claims, and side effects of calcium.

Read article
Wellness
Glucosamine

Learn about the medical uses, claims, and side effects of glucosamine.

Read article
Wellness
Acupuncture

Learn more about acupuncture, an ancient form of Chinese medicine. Behind this treatment is the belief that energy (or life force, called Qi) flows through your body. Improving that flow improves your health.

Read article
Wellness
Cranberry

Learn about the medical uses, claims, and dosing of cranberry.