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Cited by 171

The DOI matches its Crossref record; 8 of the 8 references it cites were found in a registry or an index.

Astaxanthin: How much is too much? A safety review

Brendler, Thomas, Williamson, Elizabeth Mary·2019·Phytotherapy Research

Abstract

Astaxanthin (AX)‐containing preparations are increasingly popular as health food supplements. Evaluating the maximum safe daily intake of AX is important when setting dose levels for these products and currently, there are discrepancies in recommendations by different regulatory authorities. We have therefore conducted a review of approved dose levels, clinical trials of natural AX, and toxicological studies with natural and synthetic AX. Recommended or approved doses varied in different countries and ranged between 2 and 24 mg. We reviewed 87 human studies, none of which found safety concerns with natural AX supplementation, 35 with doses ≥12 mg/day. An acceptable daily intake (ADI) of 2 mg as recently proposed by European Food Safety Authority was based on a toxicological study in rats using synthetic AX. However, synthetically produced AX is chemically different from natural AX, so results with synthetic AX should not be used in assessing natural AX safety. In addition, few safety studies have been conducted in either humans or animals with synthetic AX. We therefore recommend the ADI for natural AX to be based only on studies conducted with natural AX and further studies to be conducted with synthetic AX (including human clinical trials) to establish a separate ADI for synthetic AX.

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Metadata

Authors
Brendler, T., & Williamson, E. M.
Venue
Phytotherapy Research
Publisher
Wiley
Published
2019-12
Volume
33
Issue
12
Pages
3090-3111
ISSN
  • 0951-418X (ISSN-L)
  • 1099-1573
OpenAlex
W2990363610
Cited by
171
References
8
FWCI
6.73
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Astaxanthin: How much is too much? A safety review. https://app.cochat.ai/papers/10.1002/ptr.6514
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Brendler, T., & Williamson, E. M. (2019). Astaxanthin: How much is too much? A safety review. Phytotherapy Research. https://doi.org/10.1002/ptr.6514

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