What is the best way to get rid of a horrible dry cough?

Diagnose first...: Before it can be treated, first the etiology of your non-productive cough must be identified. Possible diagnoses include bronchospasm from any cause, gerd, sinus problems or a combination of factors. You need to see your doctor so the correct diagnosis can be made and treatment given as all these possibilities have different treatments. If you smoke, you need to quit asap!