Symptoms:
Wet, phlegm-producing cough

What the drug does:
Thins and loosens mucus and phlegm—a potential breeding ground for bacterial infection—from the respiratory tract, making it easier to expel.

Active ingredients:
Guaifenesin is the main ingredient.

Who should avoid:
Pregnant or nursing women. People with a cough due to asthma, emphysema, bronchitis or smoking should consult a physician before using any of these products.