can anyone tell me how long it lasts???? I am sooo ticked-i was feeling great! I thought it was just allergies, but now I am numb, cant think, gotta claw my eyes out, cant stand noise, dizzy, etc, etc, etc, etc.......I just got my house clean and caught up on work! I dont have time for this, and i have another deadline coming up. can i just say F*** this S***! sorry, had to get that out! argh!