Chest cough & Iodine

I have terrible chest cough for last three days, five people around me have the same thing. I have done everything that my parents taught us, which is drinking ginger tea with honey and lemon, take turmeric powder with hot milk or just straight before going to bed and chew dried amla and ginger during the day time. Nothing has helped. I can't even continue a conversation, especially in the evening it get worse.

I stopped taking Iodine because my chest was hurting and could not manage the schedule to drink this and other things for my cough.I was taking 10 drops of Iodine everyday.

Is there anything else I can take for my cough and still continue my Iodine?

Thank you.
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