Gold Seal Astaxanthin Review: 5 Carotenoids in One Softgel Routine
Most astaxanthin softgels give you one carotenoid at 4 to 12 mg. This one gives you 24 mg plus four more. Here's what's inside and what the research supports.
Updated October 12, 2026
The verdict in 30 seconds
- 24 mg natural astaxanthin from Haematococcus pluvialis microalgae
- Plus lutein (40 mg), zeaxanthin (8 mg), lycopene (20 mg) and tocotrienol vitamin E (100 mg)
- 2 softgels a day with a meal; one pouch lasts 30 days
- 24 mg sits at the top of the daily amounts approved worldwide, and a review of 87 human studies found no safety concerns with natural astaxanthin1
- 30-day money-back guarantee, no return needed
Gold Seal Astaxanthin
- 24 mg natural astaxanthin from Haematococcus microalgae
- Plus 40 mg lutein, 8 mg zeaxanthin, 20 mg lycopene and 100 mg vitamin E (tocotrienols)
- 5 carotenoids in one daily serving of 2 softgels
- 30-day money-back guarantee, no return needed
What's inside, and what each part does
The deep red pigment from microalgae. It sits across the whole wall of each cell.
The two carotenoids that collect in the macula, the center of your eye.
The red carotenoid from tomatoes, studied for skin and sun exposure.
A powerful form of vitamin E that helps protect the other carotenoids.
Why 24 mg, and why 2 softgels
Approved daily amounts of astaxanthin range from 2 to 24 mg depending on the country.1 Gold Seal uses the top of that range, then adds four more carotenoids. That's 192 mg of actives a day, which is why it takes 2 softgels.
What the research says
Skin
In a 10-week placebo-controlled trial, people taking astaxanthin held up better to UV exposure and kept more skin moisture.2 In a 6-week trial in men, astaxanthin improved crow's-feet wrinkles and skin elasticity.3 Both used 4 to 6 mg a day.
Eyes and screen time
In a placebo-controlled trial, a combination of astaxanthin, lutein and zeaxanthin protected eye-hand coordination and eye tracking after long screen sessions.4 In the large AREDS2 eye study, the daily amount was 10 mg lutein and 2 mg zeaxanthin.5 Gold Seal Astaxanthin has 40 mg and 8 mg.
Is it safe?
A 2019 review of 87 human studies found no safety concerns with natural astaxanthin, including 35 studies at 12 mg a day or more.1 Some people notice a slight change in stool color, which is harmless. Talk to your doctor first if you take blood thinners or blood pressure medicine, or if you're pregnant or nursing.
How to buy
Gold Seal Astaxanthin is sold only at goldsealsupplements.com. You can buy once, or subscribe and save with refills every 4 weeks that you can skip, change or cancel online. Most orders ship within 1 business day and arrive in 3 to 7 business days.
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Every order, refills included, comes with a 30-day money-back guarantee. Don't love it? Email us and get your money back. You don't even have to send the bottles back.
Gold Seal Astaxanthin
- 24 mg natural astaxanthin from Haematococcus microalgae
- Plus 40 mg lutein, 8 mg zeaxanthin, 20 mg lycopene and 100 mg vitamin E (tocotrienols)
- 5 carotenoids in one daily serving of 2 softgels
- 30-day money-back guarantee, no return needed
Frequently asked questions
How do you take Gold Seal Astaxanthin?
Take 2 softgels a day with a meal that has some fat in it, since astaxanthin is fat-soluble and absorbs better with food. One pouch holds 60 softgels, a 30-day supply.
Is 24 mg of astaxanthin safe?
A 2019 safety review of 87 human studies found no safety concerns with natural astaxanthin, including 35 studies at 12 mg a day or more, and approved daily amounts in different countries go up to 24 mg. If you take medication, especially blood thinners or blood pressure medicine, check with your doctor first.
Is Gold Seal Astaxanthin natural or synthetic?
Natural. It comes from Haematococcus pluvialis microalgae, the source used in most human studies.
How long does astaxanthin take to work?
Carotenoids build up slowly. Skin studies ran 6 to 10 weeks, so give it at least 60 to 90 days of daily use.
Can I take it with an eye vitamin?
Gold Seal Astaxanthin already has 40 mg lutein and 8 mg zeaxanthin, more than the 10 mg and 2 mg used in the AREDS2 eye study. If you already take an AREDS2-style eye vitamin, ask your doctor whether you need both.
Sources
- Brendler T, Williamson EM. Astaxanthin: how much is too much? A safety review. Phytother Res. 2019;33(12):3090-3111. (87 human studies; no safety concerns with natural astaxanthin; 35 used 12 mg a day or more.) Source
- Ito N, Seki S, Ueda F. The protective role of astaxanthin for UV-induced skin deterioration in healthy people: a randomized, double-blind, placebo-controlled trial. Nutrients. 2018;10(7):817. Source
- Tominaga K, et al. Cosmetic benefits of astaxanthin on human subjects. Acta Biochim Pol. 2012;59(1):43-47. Source
- Yoshida K, et al. Effects of astaxanthin, lutein, and zeaxanthin on eye-hand coordination and smooth-pursuit eye movement after visual display terminal operation in healthy subjects: a randomized, double-blind placebo-controlled trial. Nutrients. 2023;15(6):1459. Source
- Age-Related Eye Disease Study 2 Research Group. Lutein + zeaxanthin and omega-3 fatty acids for age-related macular degeneration: the AREDS2 randomized clinical trial. JAMA. 2013;309(19):2005-2015. (10 mg lutein + 2 mg zeaxanthin a day.) Source