Remember, coughing is your body's way of driving out the infection and keeping your breathing passages clear. The best cough remedies for bronchitis contain guaifenesin, which helps bring up sputum. If you opt for a guaifenesin drug, you may see better results if you drink a bit of extra water, which may help to loosen phlegm and keep it moving through your body [source: Mayo Clinic].
But if you're at the end of your rope and can't bear another minute of hacking, especially if it's been keeping you from getting the sleep you need to recover, try a medicine that contains the cough suppressant dextromethorphan. You may find this drug in lozenge, syrup, or capsule form. Take it only as often as absolutely needed. Check with your doctor if you're unsure, and take note that in some cases this style of drug can be habit-forming [source: Mayo Clinic].
Combination products should generally be avoided; decongestants, antihistamines, and alcohol (common ingredients in combination products) have no role in the treatment of coughs and may even increase discomfort by causing side effects. Most of the candy-type cough drops act as demulcents on the throat; in other words, their soothing properties are due largely to their sugar content.