<<Disclaimer: Verify this information before applying it to your situation.>> I find it very interesting to hear that Bayer products are not gf. The CSA guide that I received last fall says that Genuine Bayer Aspirin is gf, so I guess one almost has to call every time that they use anything. Both the CSA Guide and the Tri-County CeliacGuide both state that Advil is gf, if you are interested, but both of these listings go back to 1996. If you have a local chain store, either drug or supermarket, a lot of them will check out their products for you. In the Northeast, Shop n Save states that all of their pain relievers are gf and they have an 800 number and will research any of their food products for you also. Karen