I have a side effect not listed also. I also can't yet say that it's being cause by Benicar I have been taking Benicar for about 9 years and am experiencing severe tinnitus (ringing in the ears). Today, I got my hearing checked and the Dr. told me some hypertension medicines have been known to cause that. It made me think back to when I first started getting the tinnitus. It's been almost 9 years to the day. Anybody else ever experience that?