For over five years (every 90 days) my 96 year mom has gotten refills for Benicar at King Soopers Pharmacy. I wnt to pick up her Benicar and they didn't tell me they made a decision to replace it with a generic called OLMESARTAN-HTCTZ which is at the exact price as the Benicar ($285.00) (Brand name drug) hence one of the reasons I didn't suspect a change. I did not find this out until I got home. I verified with the Insurance Company and they said that her coverage had not changed and there was no reason for not filling my prescription with the brand name Benicar especially after doing so for over five years and when there is no price difference between the two drugs. The feedback I got from the Pharmacist was basically tough luck which was similar to the response given to my mom's insurance company who also called the pharmacist. She is very concerned about switching the medicine especially after a situation when my medicine was changed to a generic which created side affect resulting in me going back to the brand name drug. Is there any differences in side affects between Benicar HCT 40-12.5mg and Olmesartan HCTZ 40-12.mg?