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# Guide on Caffeine in Dietary Supplements
- URL: https://www.fdaweb.com/guide-on-caffeine-in-dietary-supplements/
- Published: 2018-04-17T12:00:00.000Z
- Updated: 2026-09-14T23:59:17.000Z
- Author: David McFarland
- Tags: FDA Policy/General, #legacy-id-D5141245

*Federal Register* notice: FDA has made available a guidance on “Highly Concentrated Caffeine in Dietary Supplements.” FDA considers some dietary supplements that consist of only or primarily pure or highly concentrated caffeine to be adulterated, and the document outlines the agency’s current thinking on such products. It is intended to help affected parties determine whether their products are or would be adulterated. To view the notice, click [here](https://www.gpo.gov/fdsys/pkg/FR-2018-04-16/pdf/2018-07836.pdf?ref=fdaweb.com).