Does Giving an 8-Month-Old Baby Liver Function Medicine Show Any Effectiveness?

An 8-month-old baby has an abnormal liver function. After one month of taking liver protection medicine, the effect is not obvious. After a detailed examination, no abnormalities were found, and the doctor recommended discontinuing the medicine and re-examination after one month. However, the baby recently developed cough and excessive phlegm symptoms. How should one handle this situation?
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