Can Sodium Carboxymethyl Starch Solution Be Taken Long-Term? Can It Be Taken with Other Traditional Chinese Medicines?

Is it safe to take sodium carboxymethyl starch solution long-term? Can it be taken together with other traditional Chinese medicines? My son is 6 years old and has been frequently suffering from colds and coughs since he was a child, especially severe in the morning upon waking up and between 1 and 2 am. He occasionally coughs 1 or 2 times during the day. He has been tested for allergens at the hospital, but there were no abnormalities found. Whenever he falls ill, he is treated with intravenous drips, and I would like to inquire about other better treatment methods.
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