What to Do When a 11-Month-Old Baby Coughs, Hiccups, and Has a Hoarse Voice?

An 11-month-old baby has been suffering from persistent coughing, hiccups, and a hoarse voice for 15 days. For the past 10 days, there have been symptoms of coughing, sneezing, and a sore throat, with the cough being more severe in the morning and evening. Each cough produces two to three sounds, and there is a sensation of phlegm. What should be done? The baby has been taking Ettanquity and Xike lao twice a day, but the effect is not significant. What medication should be taken? Thank you.
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