Best Astaxanthin Supplements 2026: Cost per Effective Dose
Top pick for Astaxanthin: NOW Foods Astaxanthin 4 mg (Zanthin) — 4mg astaxanthin per 1 softgel, None stated, $0.20/day. Our best-value pick.
All Astaxanthin Supplements Compared
All 4 products sorted by cost per labelled serving (lowest first). Dose, certification, and pricing verified against NIH DSLD and manufacturer data.
Read the dose column before the price column. Servings in this category are not equivalent — they range from 4 to 12 mg astaxanthin per serving. A lower cost per day here can simply mean a smaller serving, so the cheapest row is not automatically the best value.
| Product | Brand | Dose / Serving | Cost / Day | Certification | Pick | Buy |
|---|---|---|---|---|---|---|
| NOW Foods Astaxanthin 4 mg (Zanthin) | NOW Foods | 4mg astaxanthin / 1 softgel | $0.20 | None stated | Best Value | Buy |
| Nutricost Astaxanthin 12 mg | Nutricost | 12mg astaxanthin / 1 softgel | $0.23 | None stated | Buy | |
| Sports Research Triple Strength Astaxanthin 12 mg | Sports Research | 12mg astaxanthin / 1 softgel | $0.44 | None stated | Buy | |
| Nutrex Hawaii BioAstin 12 mg | Nutrex Hawaii | 12mg astaxanthin / 1 softgel | $0.69 | None stated | Buy |
In-Depth Astaxanthin Guides
Go deeper on astaxanthin — by goal, by form, and what the evidence actually supports:
- Astaxanthin Side Effects & Safety
- Astaxanthin Benefits: Evidence by Claim
- Dosage Guide (4-12 mg range vs the 2 mg synthetic-rat mix-up)
- How Long Does It Take to Work?
- Best Astaxanthin Supplement (ranked by cost per mg)
- Astaxanthin for Eye Strain & Screen Fatigue
- Natural vs Synthetic Astaxanthin: Does the Source Matter?
Our Picks
Best Value: NOW Foods Astaxanthin 4 mg (Zanthin)
4mg astaxanthin per 1 softgel. None stated. $0.20/day. 90 servings per container at $17.43.
How We Rank Astaxanthin Supplements
Every product is evaluated on three criteria:
- Cost per day. Not cost per pill or cost per bottle — what it actually costs per day at the product's labelled serving. Where a category's servings differ in strength we flag it above the table, because cost per day is only comparable when the doses are.
- Third-party certification. USP Verified, NSF Certified for Sport, and ConsumerLab Approved indicate independent testing for purity, potency, and contaminants.
- Bioavailable form. We prioritize products using the specific chemical form shown to be most effective in published research.
Rankings are not influenced by affiliate commissions. We earn the same commission regardless of which product you choose. Read our full methodology.
Personalize Your Astaxanthin Choice
Not sure which astaxanthin supplement is right for you? Use our free tools:
- DNA Supplement Analyzer — upload 23andMe or AncestryDNA data to check for genetic variants affecting astaxanthin metabolism. Runs entirely in your browser.
- Lab Results Interpreter — enter your blood test values to get personalized dosing recommendations.
- Supplement Stack Builder — build a complete protocol based on your age, sex, medications, and goals.
- Supplement Audit — already taking astaxanthin? Check if you have the right form and dose.