This product delivers 4 mg of **astaxanthin** per softgel using the Zanthin branded extract from Haematococcus pluvialis microalgae. Astaxanthin is a carotenoid antioxidant with moderate clinical evidence for reducing eye fatigue, supporting skin against UV-related damage, and improving lipid markers like HDL cholesterol and triglycerides. At 4 mg, you're at the lower end of the researched dose range (4-12 mg), which is sufficient for eye health and general antioxidant benefits but below the 6-12 mg range used in cardiovascular studies.
Zanthin is one of the well-recognized natural astaxanthin sources, and the softgel includes extra virgin olive oil as a carrier fat. This matters because astaxanthin is fat-soluble, meaning your body absorbs it significantly better when consumed alongside dietary fat. The built-in oil base helps with this even if you take it on a lighter meal.
One thing to know: astaxanthin is one of the few carotenoids that can reach the back of your eye directly, which is why it shows up in eye health research alongside ingredients like lutein. If your primary goal is cardiovascular support, you may want to take two softgels daily (8 mg) to move closer to the doses used in lipid studies. Pairing it with omega-3 fatty acids can also improve absorption and provide complementary heart and antioxidant benefits.
BioStacks
Other Ingredients (7)
CarrageenanThickener
Can break down into poligeenan (a known inflammatory) under stomach acid conditions. Tobacman (2001, Environmental Health Perspectives) reviewed evidence linking carrageenan to intestinal inflammation and ulceration. Major food brands (Silk, Stonyfield) have voluntarily removed it. Used only as a thickener — provides no health benefit.
StarchBinder
Carbohydrate polymer used as a binder, filler, and disintegrant in tablets and capsules
Extra Virgin Olive OilCarrier
Cold-pressed olive oil used as a carrier and filler in softgel capsules for fat-soluble nutrients
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
Mixed TocopherolsAntioxidant
Natural vitamin E used as preservative
Rosemary ExtractPreservative
Natural plant-derived antioxidant used to preserve freshness and prevent oxidation of oils and fats in supplements
Purified WaterSolvent
Water meeting USP specifications used as solvent/vehicle in gummies and liquids
How to Take It
Take it anytime
Fat-soluble — take with a meal containing fat for better absorption. Time of day doesn't matter.
With a meal containing fat
On the label
Suggested usage: Take 1 softgel 1 to 2 times daily with food.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$12.23
Cheaper than 92% of 54 natural astaxanthin supplements
Track this supplement in your stack
Get personalized insights, interactions, and coverage recommendations.
Get Started FreeSimilar Supplements
Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.