Lorazepam

On a two millagram Lorazepam, is there a score on one side and a R063 on the other? I have been taking them for years and they did not have a narcotic effect on me but the company I was receiveing them from quit making them and the new perscription I received makes me black out, and fall asleep very rapidly. The old pills I was taking were flat but this one is round. I was wondering if they were the same millagram and if so what is the diffence between the two? I have been taking them for over a month and I am still having these effects, and I shouldnt.