Hey L4D here. I'm a relatively new doser, but I have gotten to use some good results before. Aside from that here's my idea. For the majority, a fuck-ton of people loved and still love the original call of duty:black ops right? well why not make doses with the same effects as some of the mind altering elements of the game.
the main ideas for doses are as follows, but feel free to add more.
Nova 6
Flashbang
Zombie
Juggernog
Speed up cola (or whatever it was called)
Pack-A-Punch
Defcon (which wasn't really a weapon, but still a cool idea)
Sounds about right doesn't it again feel free to add more. Thanks -L4D