Ok so, I have GAD which has been successfully treated with CBT & EMDR Therapy. Now I have to get on a 14 hour flight for holiday. I'm scared that I will have a panic attack onboard the aircraft again (Ex flight attendant so not scared of flying, just scared of panic attack on board) If I take 2 x 5mg tablets of Valium prescribed by my dr will it prevent me from having a panic attack. I find myself feeling calm but still anxious after taking the Valium. Ive not taken any medication before ever so its nothing to do with resistance to the drug. I'm a 29yr old fit healthy male.