Does anyone have any suggestions on what to do for a persistent, dry cough that refuses to go away?

Alright, here's the deal: I've been "sick" at home for a week. All week I've felt mostly fine, a little dizzy and unhungry here and there, but that's usual for me when I've got a cold.

However, I have a persistent dry cough that REFUSES to get the hell out of my throat.
It's gotten so bad that I've almost thrown up on multiple occasions for the mere reason that I'm coughing too hard.

Any ideas on how to stop this?

So far, I've tried:

- drinking hot water (The taste of tea is highly unappealing to me)
- drinking hot honey water
- eating plain honey
- taking cough medicine
- eating Halls cough drops
- drinking orange juice/other fruit juice
- eating oranges/other fruits
- taking a warm/hot shower
- taking a warm/hot bath
- drinking chicken noodle soup
- getting plenty of rest (if I sleep anymore, I'm going to permanently be hibernating)
- not talking
- really-disgusting-tasting-throat-lozenges-of-some-Chinese-brand (it tastes like it shouldn't even be edible)
- eating salt(y stuff) to kill germs

I'm not going to try gargling with salt water again because last time I did that, I gagged right after. o-o

Everything I've tried doesn't cure my cough, and it's getting to the point where I'm going insane.

Any help would be greatly appreciated.