How Products were Selected:
Products were selected to represent those commonly sold and/or available nationally in the U.S. 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.
- Identification and quantification of acetylated mannose polysaccharide (D-acemannan) by nuclear magnetic resonance spectroscopy (NMR)
- Identification and quantification of aloin A, aloin B and emodin by high performance liquid chromatography (HPLC).
- Heavy metals:
Quantitative analysis of lead, cadmium, total and inorganic arsenic by ICP-MS or other appropriate methods determined by CL.
- Non-chewable, non-capsule, non-enteric coated supplements, enteric coated products and non-time-release formulations analyzed for disintegration utilizing United States Pharmacopeia (USP) <2040> recommendations entitled "Disintegration and Dissolution of Nutritional Supplements."
Any product not passing initial testing criteria was sent to a second independent laboratory for repeat analysis using similar methodologies.
The identities of the products were not disclosed to the laboratories performing the testing.
To achieve a "Pass" in the testing, a product had to:
- Contain at least 5% D-acemannan in an aloe vera gel (dry weight) or 200:1 extract (International Aloe Science Council and American Herbal Pharmacopeia specifications for raw material). If amount of aloe not claimed, product must contain a detectable amount of D-acemannan or other characteristic constituents of aloe vera gel.
- Aloin A, Aloin B: <10 ppm and emodin negative, unless product indicates contains leaf, resin, latex or exudate (International Aloe Science Council).
- Heavy Metals: Supplements
Lead**: Not exceed the following limits for elemental lead:
- 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 or 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 limit - based on 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.
** 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 in this paragraph.
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.