Office of Dietary Supplements - Dietary Supplements: What You Need to Know

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• The FDA has established good manufacturing practices (GMPs) that companies must follow to help ensure the identity, purity, strength, and composition of their dietary supplements. These GMPs can prevent adding the wrong ingredient (or too much or too little of the correct ingredient) and reduce the chance of contamination or improper packaging and labeling of a product. The FDA periodically inspects facilities that manufacture supplements.

• These seals do not guarantee that a product is safe or effective.

• Supplement companies are responsible for having evidence that their products are safe, and the label claims are truthful and not misleading. However, as long as the product does not contain a “new dietary ingredient” (one introduced since October 15, 1994), the company does not have to provide this safety evidence to the FDA before the product is marketed.

• Manufacturers must follow good manufacturing practices (GMPs) to ensure the identity, purity, strength, and composition of their products. If the FDA finds a dietary supplement to be unsafe, it may remove the product from the marketplace or ask the manufacturer to voluntarily recall the product.