Every product graded on COA quality, testing lab credibility, heavy metal safety, and manufacturing transparency — so you can buy with confidence. We do not earn revenue from this site; our goal is to educate and inform.
188
products graded
96
brands tracked
35%
with public COA
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17 products matched
What do these filters mean?
Quality Tier
Ultra Premium — standalone, verifiable COA from a named third-party lab; GMP certified
Premium — public COA and at least one other major transparency signal
Average — some transparency signals present but gaps remain
Poor — little or no verifiable transparency information
COA Status
Public — a downloadable or directly linkable Certificate of Analysis is publicly available
Page-embedded — COA shown as an image on the product page but not independently downloadable
On request — brand states a COA exists but you must contact them to receive it
None / Unknown — no COA evidence found
Other filters
Named lab — the brand publicly identifies the third-party testing laboratory (e.g. Eurofins, NSF)
Heavy metals tested — tested for lead, mercury, arsenic, and cadmium. “Confirmed” = verifiable evidence; “Claimed” = brand states testing but no independent verification
Form — the physical format of the supplement (resin, capsule, powder, etc.)
US Made — brand claims the product is manufactured in the United States