US
Purity

Purity Products AstaFX Plus

  • Astaxanthin
  • Capsule
  • 60
  • Unflavored
4.4/ 5 on Amazon286Amazon ratings200+bought last month4.0ProductDome score
Medium confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology
Best forYou are specifically looking to add astaxanthin to your supplement routine.

An astaxanthin capsule sold as a one-month supply, with heart health support listed among its benefit claims.

View current price on Amazon →

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ProductDome scorecard

How it ranks among the 64 astaxanthin we track

4.0/ 5ProductDome scoreMedium confidence
Owner satisfaction · 56% of scorecategory median 4.6★4.4

4.4★ across 286 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 352 ratings3.1

286 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score3.1

200+ bought on Amazon last month.

Data quality · 11% of score3.8

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 64 astaxanthin we track - how the scorecard works · full astaxanthin data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

A 60-capsule astaxanthin formula sold as a 30-day supply, marketed for endurance, skin and visual health with heart health support listed as a benefit. It is labeled vegan and unflavored.

Astaxanthin is the active ingredient the title leans on, with the brand describing it as many times more potent than vitamin C as an antioxidant, a comparison specific to astaxanthin's chemical antioxidant activity rather than a claim about overall health outcomes. Buyers should treat that multiplier as the seller's own framing rather than a guaranteed benefit.

  • 60 capsules, 30-day supply
  • Astaxanthin-based antioxidant formula
  • Vegan, unflavored
  • Heart health support listed

Who it's for

Fits buyers already interested in astaxanthin specifically for its antioxidant profile, rather than someone new to supplements looking for a general multivitamin.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out
  • Single-ingredient astaxanthin formula
  • Vegan and unflavored
  • 30-day supply clearly stated
What to check first
  • No description or review text to confirm real-world effects
  • Antioxidant potency comparison is the brand's own marketing framing

Performance notes

At 60 capsules for a 30-day supply, the dosing works out to two capsules daily. The formula is vegan and unflavored, with heart health listed as its stated benefit category.

Specifications

BrandPurity
FormCapsule
Count60
FlavorUnflavored
BenefitsHeart Health Support
DietVegan

How it compares

This product against the closest alternatives we track in astaxanthin.

ProductAmazon ratingRatingsProductDome score
Purity Products AstaFX PlusThis product4.4 / 52864.0 / 5
Sports Research Triple Strength Astaxanthin 12mg w/Organic Coconut OilSports4.6 / 58,8004.6 / 5
Nutrex Hawaii BioAstin Hawaiian AstaxanthinNutrex4.5 / 512,9004.5 / 5
Nutricost Astaxanthin 12mgNutricost4.6 / 53,6004.5 / 5
Micro Ingredients Astaxanthin 12mg with MCT OilMicro4.5 / 55,0004.5 / 5
Frequently asked

Questions about the Purity astaxanthin

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

How long does one bottle of AstaFX Plus last?

It is sold as a 30-day supply of 60 capsules, or two capsules per day.

Is AstaFX Plus vegan?

Yes, it is labeled vegan and unflavored.

What is the main active ingredient?

Astaxanthin is the primary ingredient, positioned by the brand as an antioxidant.