Hello, I'm a medical student and I used to have an allergic cough, when the temperature difference is big in winter, I cough and it's not easy to get well. I've been a doctor for a long time, and I'm a quasi-doctor in the first place. I consulted with my teachers and concluded that coughing due to throat discomfort is mainly caused by two reasons: tickling of the throat or inability to cough up phlegm. So the root of controlling cough is to deal with these two problems. I'll introduce you to your important, relatively simple, bromhexine hydrochloride tablets, expectorant effect is better, can make the secretion of the throat more gentle. Bromhexine hydrochloride tablets, 100 tablets/bottle. Three times a day, two tablets each time. It's available at all pharmacies, it's relatively cheap, about two dollars, but the effect is good. Besides that, you buy some compound licorice tablets, roxithromycin capsules (or clarithromycin delayed-release tablets, this is a little more expensive twenty or so dollars a box). These three kinds of drugs with eat, the effect is good. I personally prescribe the principle is to spend a small amount of money to see the good disease. I hope it will help you. I wish you a speedy recovery.