Review "Inert" Drug Ingredients

A recent study found that the “inactive” ingredients used in many prescription drugs aren’t so inactive, and in fact impact many of the body’s molecular processes. The authors identified 38 inactive ingredients that interacted with 44 molecular targets; in some cases the level of activity observed was similar to that exhibited by active ingredients. These included ingredients meant to be used as food dyes, preservatives, and disinfectants, such as D&C red no. 28, propylparaben, benzethonium chloride, and thimerosal, a derivative of mercury that is used in some vaccines, mascaras, and eye contact solutions.

Send a message to Congress and the FDA, telling the agency to do a better job of reviewing so-called "inert" drug ingredients for safety.


  • Your Senators
  • Your Representative
  • Food and Drug Administration


*Required fields


Please review "inert" drug ingredients

Dear [Decision Maker],

[Your Name]
[Your Address]
[City, State ZIP]
[Your Email]