This Community is not supported by medical doctors, not to say there are none ever, but in the vast majority of the cases you will get a response from a fellow patient who may have some helpful experience to share.
While PVC is not one of my problem, I will offer my opinion that a BP medication, likely a beta blocker, will not cause PVC. I also think it will not do much to reduce them. I think you should talk to you doctor about ant-arrhythmic drugs such as Propafenone and Rythmol as a possible aid in managing your PVC.
If you read the less than 1% or so of patients taking medicines...from the package insert occasionally in the medication container) there are cardiac side effects. Your dose is a low one but the PVCs (if it is PVCs) need to be checked out by a physician. Maybe he could try another med and see if they go away! Keep us posted.
I was wondering how you came out with this problem, know its been awhile since you asked it. I took benicar too, and started having terrible pvc's, 23,000 a day. They never said it was the benicar but I was in the hospital a week, and they didn't give it to me anymore. Searching online I am finding some links to heart arrhythmia and benicar. I now am supposed to get a heart ablation for the pvc's.