What is Third-party tested?

Third-party testing means a product has been checked by a laboratory with no stake in selling it. The lab publishes a certificate listing what it examined and what it found, so you can confirm the contents rather than taking the brand's word.

The brands listed here all state that they are third-party tested. Bathmate, BrainPill, Dormeo.hr, Embark and Erectin each carry this kind of independent check. These are yes or no facts rather than measurements, so there is no score to compare: look for the certificate itself before you buy, since a stated test is not the same as seeing it.