Labatelol

Hello,
I posted about this yesterday, but i have another question..
I started High blood pressure medicine on Monday i believe it was..
I started at 100mg 2 times a day. Yesterday they switched me to 200mg 2 times a day. I noticed after taking it he didnt move very much.. i called the doctor today, & they had me come in. They said he is fine.. They said continue my medicine as is. but i've taken it twice now & he slows down so much for hours after i take it..
Has anyone else experienced this?
Thanks!