I take 7.5mg daily already for panic disorder, it doesn't eliminate my anxiety but it makes me able to at least eat (I have a massive phobia of vomit), I have never gone over that dosage. I am just wondering, what dosage of valium should I take so I don't give a fuck at all about the 14 hour plane flight or motion sickness? I am so scared I am nearly ready to cancel my trip that I've spent thousands on, so any help would be great.