It's due to allergy and hypersensitivity with Multivitamin and ayurvedic medicine.
You should close that medicine.
You should do test of cough to know the reason.
Next Steps
You should take Treatment as follow as
Tab Montina L 1 time per day for 5 day after food for allergy tyoe cough .
Cap Pantop DSR 1 time per day for 5 day before cough
Syp Ambrodil S 5 ml 2 time per day for 5 day after food.
Cap Multivitamin A to Z gold 2 time per day for 5 day after food for strength and immunity
Health Tips
Please follow good life style as take plenty of fluid and take less spicy and fatty foods and keep positive attitude to fight any problem of your life.