I always suggest taking an anti-histamine (sold, over-the-counter), for anxiety / nervousness, etc. (like, when someone who is afraid of flying, has to fly)----if you were here, in the U.S., I would suggest Benadryl----but, ONLY on an as-needed basis; you couldn't take it every single day, for work "problems" (only if you're having a particularly taxing day). If you are on any other medication(s) (including herbal remedies), just make sure to ask the pharmacist if it (the anti-histamine) will "play well", with your other medication(s)----there's certain drugs that you're not suppose to take concurrently with anti-histamines, but I can't remember which ones (SSRIs, maybe).
Also, it won't make you drowsy, because of the circumstances----when one flies, for instance, they can succumb, if they want----in an interview, you will be looking-around, thinking, listening, processing, etc.; all those things won't ALLOW you to succumb (unless, maybe, if the room is super warm). If you're worried about it, though, there are anti-drowsy anti-histamines. If you want to check its effectiveness, beforehand, buy a package to have on-hand, and take it, say, a half-hour before you have to endure a particularly stressful situation; like, a company meeting.
(I have a prescription anti-histamine, that I take on an as-needed basis, for anxiety. It doesn't make me sleepy, in-the-least, if I'm active----if I'm just sitting-around home, it might make me a LITTLE bit sleepy, but if it's too late in the day, for instance, and a nap would make it so I couldn't get to sleep, at night, I can fight-it-off.)
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White female; age 59; diagnosed Aspie.
I use caps for emphasis----I'm NOT angry or shouting. I use caps like others use italics, underline, or bold.
"What we know is a drop; what we don't know, is an ocean." (Sir Isaac Newton)