But there are specific kinds that are best: “Cough medicines that contain guaifenesin and dextromethorphan should be okay for a short time,” says Meleen Chuang, MD, the chief of obstetrics and ...
A lingering cough will usually resolve on its own as post-nasal drip and inflammation decrease, Kohli said. But, if your lingering cough is accompanied by other symptoms, it’s time to see a doctor.