Lorazipam works faster than clonazipam but has a much shorter half-life, so it doesn't stay in your system past, I want to say about 16 hours. Clonazipam is about twice as strong as lorazipam, with the max dose for each is 10 pills, so 5mg and 10mg; mind you, that's the maximum for sedation, anxiety control is supposed to be 3 or 4 pills max. While the clonazipam is stronger it doesn't get used the same way by your body, so it may be that your body uses it better than lorazipam. The fact that it's new for you is plus; you can build resistance to benzos pretty fast.

Just make sure you don't do what I did... I wound up mixing both, which was something 12 pills (that was all I had left), got no effect from it, then just stopped cold turkey. I didn't sleep for 3 weeks.