HOW PRODUCTS WERE EVALUATED:
How Products were Selected:
Products tested represent those commonly sold and/or available nationally in the U.S. and Canada. ConsumerLab.com purchased products on the open market through retail stores, on-line retailers, and direct sales or multi-level marketing companies. Products were not accepted directly from manufacturers.
- Total astaxanthin esters were quantified using high performance liquid chromatography (HPLC). Any product not passing this initial assay was tested in a second independent laboratory utilizing a similar HPLC methodology (DSC 2015).
- Analyses for lead, arsenic, cadmium and mercury were done by inductively Coupled Plasma-Mass Spectroscopy (ICP-MS) methodology (only for products containing whole herbs and/or more than 250 mg of minerals per daily dose).
- Disintegration of non-chewable, non-capsule and non-time-release formulations was analyzed utilizing United States Pharmacopeia (USP) <2040> recommendations entitled "Disintegration and Dissolution of Nutritional Supplements."
ConsumerLab.com may modify or use other appropriate test methods if necessary to test special product formulations.
Identities of products were not disclosed to laboratories performing the testing.
To achieve a "Pass" in the testing a product must meet the following requirements:
- Contain 100% and not more than 135% of the claimed amount of total astaxanthin esters including the monoester and diester form of 13-cis-astaxanthin, 9-cis-astaxanthin and all-trans-astaxanthin. Extracts are expected to contain a minimum of 5% total astaxanthin esters. The minimum will be applied if there is no claimed amount of astaxanthin on the product supplement facts panel.
- Heavy Metals: Products containing whole herbs and/or more than 250 mg of minerals per daily dose must not exceed the following limits:
- Products marketed for use by children may not exceed the State of California's Prop 65 limits for lead in dietary supplements of 0.5 mcg per recommended daily serving with an additional allowance of 0.8 mcg if the product contains more than 1,000 mg/day of calcium.
- Products with a single serving weights of less than 5 grams which are not marketed for use by children, may not exceed the State of California's Prop 65 limits for lead in dietary supplements of 0.5 mcg per recommended daily serving with an additional allowance of 0.4 mcg if containing 250-999 mg/day of any combination of elemental calcium, magnesium and potassium or 0.8 mcg if containing more than 1,000 mg/day of any combination of these minerals. An additional allowance of 0.5 mcg is provided if containing 250-999 mg/day of whole herb (not extract) or 1.0 mcg if containing 1000 mg/day or more of whole herb (not extract). However, total lead allowance will not exceed 2 mcg.
- Products with single serving weights of 5 grams or more which are not marketed for children may not exceed 2.5 mcg per serving nor 4.0 mcg per daily serving.
Arsenic: Contain less than 10 micrograms of total arsenic and no more than 5 micrograms of inorganic arsenic per daily serving (EPA and state of New Jersey limits - based on 1 liter of water).
Mercury: Contain no more than the lesser of 1 mcg/gram (USP) or 2 mcg/daily serving of mercury (EPA limit for 1 liter of water).
- If applicable to the product, it must meet recommended USP <2040> parameters of disintegration for dietary supplements (excluding capsule, chewable and time-release products).
- Be in compliance with FDA labeling requirements.
* Passing scores allow for specific margins of technical error associated with each analysis. ConsumerLab.com reserves the right to disqualify a product at any time from passing its testing if it considers such product to present a safety risk or to provide misleading or inaccurate information in its labeling.
** If available for sale in California, a product that exceeds the State of California's Prop 65 lead limit requires a warning label. However, with or without this warning label, a product cannot pass ConsumerLab.com testing if it exceeds the levels described this paragraph.