Supplements, checked label by label

Checked 25 October 2026 · labels from NIH's public label database, January 2026 release

Each page starts from every label NIH lists for one supplement, from every brand, and shows how many are third-party tested.

Compare up to five brands side by side

• 

  Fish oil

  255 of 2,475 third-party tested

• 

  Magnesium

  15 of 1,367 third-party tested

• 

  Vitamin D

  67 of 1,745 third-party tested

• 

  Creatine

  51 of 461 third-party tested

• 

  Iron

  14 of 459 third-party tested

• 

  Zinc

  15 of 692 third-party tested

• 

  Vitamin B12

  33 of 844 third-party tested

• 

  Selenium

  4 of 237 third-party tested

• 

  Folate

  8 of 324 third-party tested

Source: NIH's public label database, 11 January 2026 release; checks by Decode, 25 October 2026