supplement

Astaxanthin

Chemical structure of Astaxanthin (PubChem CID 5281224)
Structure via PubChem
Half-life
16 h
Typical timing
with_meal
Food rule
with food
Default unit
mg

Studied for

Overview

Astaxanthin is a naturally occurring carotenoid pigment, belonging to a larger class of phytochemicals known as terpenes. It is responsible for the red/pink color in many marine organisms, including microalgae (such as *Haematococcus pluvialis*), salmon, trout, krill, shrimp, and lobster. Unlike some other carotenoids (e.g., beta-carotene), astaxanthin does not convert to vitamin A in the human body, meaning it does not carry the risk of pro-vitamin A toxicity. It is recognized for its potent antioxidant properties, significantly higher than those of vitamin E or beta-carotene. Chemically, its unique structure, particularly the presence of hydroxyl and keto groups on each ring structure, allows it to span cellular membranes, providing comprehensive antioxidant protection from both the aqueous and lipid phases of cells. Due to its vibrant color and health-promoting properties, astaxanthin is used as a dietary supplement and a food colorant. (NIH ODS, PubChem)

Deep dive

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Known interactions

  • Category rule: glp1 × supplement
    Note

    GLP-1 medications slow stomach emptying, changing how/when oral supplements absorb; rapid weight loss raises the importance of protein and micronutrients.

    Time oral supplements when nausea is lowest; prioritize protein and micronutrients; discuss with your provider.

  • Category rule: supplement × medication
    Note

    Some supplements change how the body processes medications (absorption, liver enzymes, or additive effects).

    Specific pairs are checked against a licensed drug database and shown with their own severity. Always confirm with your provider or pharmacist.

Frequently asked

Sources referenced

["Cochrane Library", "DrugBank", "Examine.com", "Mayo Clinic", "MedlinePlus", "National Institutes of Health Office of Dietary Supplements (NIH ODS)", "PubChem"]

Stackwise compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician.

Related compounds

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Related benefits

Other compounds studied for the same benefits as Astaxanthin.

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