I somehow got the flu, I think from someone at work. I've tried DayQuil, NyQuil, some Nighttime generic medicine, and Sudafed. None of them work; last year all of those worked fine but I think I built an immunity to them or something. Any recommendations for good OTC medicines for flu? I'm pretty fucked: sore throat, fever, dizzines, nasal congestion, coughing and sneezing.