If i were to take a alprazolam before bed would it help avoid a panic attack in the morning?

Not likely,: As Alprazolam is too short acting and will be gone by the time you wake up.

Possibly: Alprazolam is a relatively short acting anti-anxiety medication which is why it is given 2-3x's/day. Some people get panic attacks in the middle of the night so it should prevent those attacks but if you sleep 8 hours at night more than likely the effects will be gone by the morning. However Xanax (brand name for alprazolam) comes in an XR form that can be taken once/day.

Xanax (alprazolam) at nite: Usually not, since the half life of xanax (alprazolam) is short, it would be out of your system by morning, unless you take the extended release xanax (alprazolam)-xr . Talk to your doctor about this.