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Priority review Rule Amended Final

FDA Delays Effective Date for Spirulina Extract Color Additive

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Published March 20th, 2026
Detected March 25th, 2026
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Summary

The FDA is delaying the effective date of its final order regarding the expanded use of spirulina extract as a color additive in human foods. This delay is due to timely objections and a request for a hearing filed by Obelisk Tech Systems Inc. The agency will publish a future document to announce a new effective date or other administrative action.

What changed

The Food and Drug Administration (FDA) has issued a final order delaying the effective date of its February 6, 2026, final rule concerning the expanded use of spirulina extract as a color additive in human foods. The original rule aimed to allow broader use, lower heavy metal specifications, and add a cadmium specification. This delay, effective March 20, 2026, is a legal requirement following objections and a hearing request filed by Obelisk Tech Systems Inc. The FDA states this action does not alter its determination of the additive's safety but indicates a future document will address the objections and announce a new effective date or other administrative action.

Regulated entities, particularly food and drug manufacturers, should note that the compliance deadline for the original rule has been indefinitely postponed. While the FDA maintains its stance on the safety of spirulina extract, the objections filed necessitate further review. Companies should monitor future Federal Register publications from the FDA for updates on the status of this color additive listing and any revised effective dates or administrative actions. No immediate compliance actions are required based on this delay notice.

What to do next

  1. Monitor future Federal Register publications for updates on the spirulina extract color additive rule.

Source document (simplified)

Content

ACTION:

Final order; delay of effective date.

SUMMARY:

The Food and Drug Administration (FDA or we) is announcing a delay of the effective date of our February 6, 2026, final order
to amend the color additive regulations to provide for the expanded safe use of spirulina (Arthrospira platensis) extract as a color additive in human foods generally (except for infant formula, certain foods subject to regulation by
the U.S. Department of Agriculture (USDA), and foods for which standards of identity have been issued under section 401 of
the Federal Food, Drug, and Cosmetic Act (FD&C Act), unless the use of the added color is authorized by such standards) at
levels consistent with good manufacturing practice (GMP); to lower the heavy metal specifications for lead, arsenic, and mercury;
and to add a specification for cadmium. The delay of the effective date is required by law following the filing of timely
objections and a request for a hearing on the final order. This announcement does not reflect a change in our determination
that there is a reasonable certainty of no harm from the use of this color additive under the conditions of its intended use.
In addition, this announcement does not constitute a determination that all of the issues raised in the submission constitute
objections or that a hearing is justified on any objections or requests for a hearing that have been filed.

DATES:

As of March 20, 2026, the effective date of the final order published February 6, 2026 (91 FR 5291) is delayed indefinitely.
The Food and Drug Administration will publish a document in the
Federal Register
announcing a new effective date or other administrative action on the order.

FOR FURTHER INFORMATION CONTACT:

Marissa Santos, Office of Pre-Market Additive Safety, Human Foods Program, Food and Drug Administration, 5001 Campus Dr.,
College Park, MD 20740, 240-402-8160; or Meridith L. Kelsch, Office of Policy and International Engagement, Human Foods Program,
Food and Drug Administration, 5001 Campus Dr., College Park, MD 20740, 240-402-2378.

SUPPLEMENTARY INFORMATION:

In the
Federal Register
of February 6, 2026 (91 FR 5291), FDA issued a final order, Listing of Color Additives Exempt from Certification; Spirulina Extract, to provide for the expanded safe use of spirulina (Arthrospira platensis) extract as a color additive in human foods generally (except for infant formula, certain foods subject to regulation by
the USDA, and foods for which standards of identity have been issued under section 401 of the FD&C Act, unless the use of
the added color is authorized by such standards) at levels consistent with good manufacturing practice (GMP); to lower the
heavy metal specifications for lead, arsenic, and mercury; and to add a specification for cadmium. Specifically, the final
order amended § 73.530, titled “Spirulina extract,” (21 CFR 73.530). We issued the final order in response to a color additive
petition submitted by GNT USA, LLC. We gave interested persons until March 9, 2026, to file objections and requests for a
hearing on the final order.

Obelisk Tech Systems Inc. submitted objections and a request for a hearing. See Submission from Obelisk Tech Systems Inc.,
to the Dockets Management Staff, Food and Drug Administration, submitted March 7, 2026. In addition to the objections and
request for a hearing submitted by Obelisk Tech Systems Inc, we received another comment that opposed the final order, but
does not appear to be an objection under 21 CFR 12.22 nor does it request a hearing. We plan to address the objections and
request for a hearing in a future document.

Under sections 701(e)(2) and 721(d) of the FD&C Act (21 U.S.C. 371(e)(2) and 379e(d)), within 30 days after publication of
an order relating to a color additive regulation, any person adversely affected by such an order may file objections, specifying
with

  particularity the provisions of the order deemed objectionable, stating the grounds therefor, and requesting a public hearing
  upon such objections. The filing of the objections operates to delay the effective date of the final order until we take final
  action on the objections. [(1)]() Our announcement of the delay of the effective date of the final order does not reflect a change in our determination that
  there is a reasonable certainty of no harm from the use of this color additive under the proposed conditions of its intended
  use. In addition, this notification does not constitute a determination that all of the issues raised in the submission constitute
  objections or that a hearing is justified on any objections or requests for hearing that have been filed.

For access to the docket to read the objections received, go to https://www.regulations.gov and insert the docket number FDA-2024-C-3384 into the “Search” box and follow the prompts and/or go to the Dockets Management
Staff, 5630 Fishers Lane, Rm. 1061, Rockville, MD 20852.

Grace R. Graham, Deputy Commissioner for Policy, Legislation, and International Affairs. [FR Doc. 2026-05733 Filed 3-20-26; 4:15 pm] BILLING CODE 4164-01-P

Footnotes

(1) Although the statute uses the word “stay,” this delay effectuates the same result.

Download File

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CFR references

21 CFR 73.530

Named provisions

Spirulina extract

Classification

Agency
FDA
Published
March 20th, 2026
Instrument
Rule
Legal weight
Binding
Stage
Final
Change scope
Substantive
Document ID
91 FR 5291
Docket
FDA-2024-C-3384
Supersedes
February 6, 2026, final order (91 FR 5291)

Who this affects

Applies to
Drug manufacturers Food manufacturers
Industry sector
3114 Food & Beverage Manufacturing 3254 Pharmaceutical Manufacturing
Activity scope
Color Additive Listing
Geographic scope
United States US

Taxonomy

Primary area
Food Safety
Operational domain
Compliance
Compliance frameworks
FDA 21 CFR Part 11
Topics
Chemical Safety Administrative Law

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