Compliance & FDAUpdated June 2026By ReguSift Editorial Team

How does ReguSift handle proprietary blends under FDA rules?

ReguSift is an FDA supplement facts label generator that turns Certificates of Analysis into compliant, print-ready supplement labels in minutes.

ReguSift fully automates the complex sorting of proprietary blends. Under 21 CFR 101.36, components of a proprietary blend must be listed in descending order of predominance by weight, but their specific quantitative amounts can be omitted. ReguSift automatically verifies weight order, calculates the overall blend %DV, and formats the sub-ingredients with standard FDA indentations and symbol footnotes.

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