Can I take all of these supplements at once?

Can I take all of these supplements at once?

I'm getting on a plane (I have agoraphobia & anxiety disorder) next week so I purchased a bunch of supplements known for relaxation. I want to know if I take them all on the plane (just in case), if I will get a synergistic effect or if it will be bad.

Scullcap (425mg caps)
Passion flower extract (250 mg caps)
Valerian root extract (220mg caps)

I also get cramps and really bad back pain when I'm sitting for a long time so I have Vicodin (hydrocodone/APAP 5mg/500mg) as a fail safe. Is it safe to take Vicodin with those listed above (as in not die, I don't care if I get sleepy)?
I'm also taking L-Tryptophan (500mg) twice daily
I'm also taking L-Tryptophan (500mg) twice daily
I'm also taking L-Tryptophan (500mg) twice daily

---

Orignal From: Can I take all of these supplements at once?