I have a dental procedure coming up and due to a serious phobia of the dentist I have been prescribed 10mg of Valium to take 1 hour before my appointment.

I've never tried Valium or any other kind of Benzo before. I'm worried about the effects and not being in control during and after the appointment.

How will I feel for the rest of the day? I understand it has a long half life, but approx how long will it take to feel "normal" again?

I have a party to attend approx 36 hours later, will I be back to normal and able to drink alcohol or will I still be sleepy and feeling the affects?