Cough syrup for an adult

I've been coughing for going on 6 weeks now... Nothing works. Not the tussin's. not the DM's. Maybe get something for nighttime so you can try to sleep it off. On thing that sort of worked for a day or two was to wrap my neck up in blankets while I slept, and wear a hat to bed (and around the house, also a turtleneck) to just heat the whole head/neck area up and sweat out of the cough.

I'm giving up tomorrow and calling the community health center to find out if I have pneumonia or mono or bird flu.

NO cough syrup, it doesn't work. The CDC just admitted as much.

Sorry, I 'm no help. I wouldn't know what the heck to get at the pharmacy.

When I get anything like a cough, cold, flu, I bring out the BIG guns:
Sodium Ascorbate Powder, Echinacea, Zinc lozenges, Sambuco, herbal teas...in worst case scenario, two tablespoons of rum in some hot tea with lemon.