Structure/Function Claim
A claim about how an ingredient affects the body's structure or function - allowed with substantiation + a disclaimer.
A structure/function claim describes how a nutrient or ingredient affects the normal structure or function of the body - e.g. "supports immune health" or "promotes restful sleep." Allowed under DSHEA, they require two things: substantiation, and the FDA disclaimer ("This statement has not been evaluated by the FDA...").
They are not disease claims ("treats," "cures," "prevents") - using those turns your supplement into an unapproved drug. Substantiation means identity and potency data plus literature support for the claimed benefit at that dose.
Related terms
Guides that cover Structure/Function Claim
How to Use Your Test Results in Marketing (Without Getting an FDA Letter)
Getting StartedDo I Actually Need to Test My Supplements? The Honest Answer
FDA & GMPDSHEA Explained for Supplement Brands
ComplianceSupplement Label Claim Substantiation — Testing Every Word on Your Bottle
ComplianceStructure/Function Claims Testing Requirements
ComplianceSupplement Facts Panel Testing Requirements
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