The logic of anxiety medication

I went to the doctor because I was having anxiety and panic attacks. He said it became kinda of a common issue for people during the pandemic, so he put me on some meds.

The side effect of those meds is that I feel tired all the time and if I sit still too long I start getting sleepy.

So I think I understood the logic behind those meds:
“You can't have a panic attack if you are too tired for that”