Thank you you all for the response. At least, I know the side effects are not my imagination as my family members put it. Ras422. My first 20mg Benicar appeared to be a wonder drug. It made me moving around like Hercules but not only in the day time and also at night time: Insomnia and extremely hyper and agitation. The blood vessels in my limbs dialted so hard that I could feel my limbs moving when lying down in bed.I tried to cut myself of the Benicar 20mg but whenever I am dealing with difficult customers, I feel pressured on my face and my eyes. I now on 5 mg Enalapril ( ACE ) twice a day. Good night rest for the first two days and thanks God no cough yet just dizziness and tiresome most of the time. The third night, my sleep pattern was disrupted on and off so many times... Again thank you all. HBP med is like hi-end ICs, I guess my body will be a guinea pig for a while.