Page 1 - Reviews - Dr. Mercola, Astaxanthin, 4 mg, 30 Capsules - iHerb
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Customer Ratings & Reviews

100% authenticOur products are sourced directly from brands or authorised distributors.Show more
4.8
Based on 252 ratings
215
19
13
4
1
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What customers say
Customer reviews (87)
Product reviews solely reflect the views and opinions expressed by the contributors and not those of iHerb. iHerb does not verify or endorse any claims made in these reviews. Statements regarding food supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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Reviews from United Kingdom
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English (UK)
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motherEarth
Silver
Posted on 13/05/2026
United Kingdom
291
1
1
64
best of the best
Verified Purchase
Best astaxanthin on the market, we use this every summer vacation.
Auto-translated from English
TetianaLysenko
Posted on 21/08/2026
United Kingdom
69
0
0
4
Perfectly
Verified Purchase
This is not the first time I order. I have psoriasis, which is concentrated on the feet and bones of the hands. When I take this drug for 3 months, the skin condition improves significantly. The size of the capsules is very convenient. I will order more
Auto-translated from Ukrainian
Viktoriia
Silver
Posted on 18/03/2026
Germany
138
40
0
155
The King of Antioxidants of the Highest Quality! My Discovery of the Year from Dr. Mercola 👑🧡
Verified Purchase
As I promised in my previous reviews, I am sharing my impressions of this miracle drug! Honestly, I did not even expect such a tangible and quick positive effect on the whole body, but this antioxidant really works 100%. The quality of the Dr. Mercola brand is once again impressive. Every ingredient here is organic and pure, and the dosage of 4 mg is exactly the “golden mean” for daily support. This astaxanthin is not just a pigment, it is the elite of the family, which also includes the well-known carotene. But unlike regular beta-carotene, astaxanthin is ten times more powerful in fighting free radicals!" Why I now buy it constantly: Eyes and vision: Since I work a lot at the computer, I noticed a noticeable improvement here - my eyes get less tired, dryness and "sand" disappeared. Energy: It's not a stimulant, but the internal battery seems to have been charged. I have strength for training and an active day. Skin: It has become more elastic and resistant to the sun. This is the main advantage of astaxanthin - it works as an "internal sunscreen". Size: The capsules are very small, they are very easy to swallow and the taste is not felt at all. This is now my must-buy, which I plan to make periodically to maintain the youth of cells. If you are looking for a way to protect your body from stress and aging - there is no better option! PS If my review was useful to you - don't hesitate, like it! ❤️ They say that from one of your likes my wrinkles are smoothing out even faster, and your karma is becoming as pure as the composition of this astaxanthin! 😉✨
Auto-translated from Ukrainian
25e52315-2771-45dd-b04d-c0b26cf34602
Monel
Posted on 27/03/2026
United Arab Emirates
11
0
0
6
My Top Antioxidant Pick
Verified Purchase
Whenever I need to support immunity, improve the condition of my skin and hair, or boost energy, I always choose this product. Astaxanthin is considered one of the most powerful and beneficial antioxidants. Dr. Mercola offers excellent quality with no unnecessary additives. The bottle size is perfect for one full course, and I always keep one at home in case someone catches a cold 🫶
Auto-translated from English
Nastino4ka
Gold
Posted on 24/02/2026
Ukraine
427
0
0
62
Super
Verified Purchase
I took Dr. Mercola Astaxanthin 4 mg, 30 capsules daily for several weeks — the capsules are small, easy to swallow, and have no unpleasant aftertaste. I noticed that my skin looked more radiant and even, especially after a long day on the screen or outside. Sometimes it seems that my eyes are less tired — as if they are less strained after a long day of reading or studying. I also feel a little better overall, and my skin looks fresher, especially in the morning. I have had no stomach problems or irritation — the supplement is well tolerated.
Auto-translated from Ukrainian
Marcin
Silver
Posted on 6/04/2026
Poland
251
1
0
38
Excellent
Verified Purchase
It strengthens the entire body. It has a positive effect on my eyesight. My eyes feel less tired when reading for long periods of time. I will definitely buy it again in the future.
Auto-translated from Polish
iHerb Customer
Gold
Posted on 14/10/2025
Kazakhstan
890
0
0
20
Прекрасно!
Verified Purchase
Dietary Supplement Proving Quality Products Since 2001 Any antioxidants, even some of the more potent ones, are unable to cross both your blood-brain and blood-retinal barriers to reach your brain, nervous system and eyes. Astaxanthin is different. Along with its rare ability to cross these protective barriers, it also helps protect your brain, eye tissue and just about every cell from free radicals (as many as 19 at a time) and other substances that can cause oxidative damage and cellular aging. Having up to 6,000 times the quenching power of other well-known antioxidants, astaxanthin offers astounding potential for many functions, including cellular energy production, cognitive and psychomotor function, eye and skin health, immune function, a normal inflammatory response and cardiovascular health.
Auto-translated from English
iHerbCustomer
Silver
Posted on 20/11/2025
France
133
0
2
9
Verified Purchase
This is the most powerful antioxidant for cells! Improves skin condition and is very beneficial for vision. It has an anti-inflammatory effect. Supports the heart and blood vessels. This brand is one of the best and highest quality.
Auto-translated from Russian
AlsKo
Silver
Posted on 28/10/2025
Germany
107
0
0
41
It didn't suit me!
Verified Purchase
It might have been a coincidence, but while taking this astaxanthin, I developed a huge pigment spot on my forehead for the first time in my life! I used SPF 50 on my face every day, like I always do when I'm at the beach, but it didn't work this time. It's annoying! I've almost gotten rid of the spot now, but they said it could reappear even with the slightest sun exposure! The surprising thing is that it's supposed to protect against this kind of thing, as I understand it, but here's such a misunderstanding!
Auto-translated from Russian
MALHARBI
Posted on 24/01/2026
Saudi Arabia
22
0
0
2
Good product
Verified Purchase
I am really impressed with the quality of this supplement. I've also tried various other products from this brand, and I consistently find their ingredients to be effective and reliable. So I gave it 5 stars because Dr. Mercola has a lot of research behind all of his products. The conclusion is that this product has a superior quality. Can't really tell yet as it's too soon since I started taking it but this might be worth it. Overall, it's a valuable addition to my wellness routine. Size good
Auto-translated from English