I caught an airplane cold on the way home from my recent vacation. Although NyQuil helped me sleep through the night, I remained congested and coughing, with no real signs of improvement. A friend told me that she had good luck with MucinexDM so I decided to give it a try.
MucinexDM's Maximum Strength active ingredients are 60mg of Dextromethorphan, a cough suppressant, and 1200mg of Guaifenesin, an expectorant. The Maximum Strength tablets have twice the amount of active ingredients of the normal strength medicine. The large tablets should be taken with a lot of water.
The cough and congestion relief began about two hours after taking the first pill. You take a pill every 12 hours. Based on my experience, it seems that the pills provide temporary relief of the symptoms rather than curing the cough. While I am happy to be able to breathe and not have an annoying cough, the pills seem to make me a bit groggy. There is not an explicit warning against driving on the box, but I would recommend against it.
I have noticed a wide variation in price for MucinexDM Maximum Strength. At one drug store it was about $1.25 a tablet. Wal-Mart has the best price at about 75 cents per tablet.
While I don't necessarily view this as the cure for the common cold, I am happy to have another weapon in my cough fighting arsenal.