Tag: Underdosing

According to the Dietary Supplement Health and Education Act of 1994 (DSHEA), supplement companies are not legally required to disclose the precise amount of each ingredient within a proprietary blend. This loophole allows manufacturers to group ingredients under a collective name, leaving consumers completely in the dark about what they are truly ingesting.

According to research published in The Journal of Nutrition, proprietary blends are used by a significant portion of dietary supplement manufacturers, making their inclusion in products a widespread industry practice. While often marketed as a company's 'secret formula' for superior results, this lack of transparency raises crucial questions for consumers about a product's true effectiveness, safety, and value.

An estimated 76% of U.S. adults use dietary supplements, many of which contain proprietary blends [1]. This common practice of grouping ingredients without disclosing individual amounts leads to a critical question for consumers: are proprietary blends bad?