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You probably are suffering from Asthma
for which you need to also be on inhalers. Just taking Telekast-L will not help. You can continue taking it but it makes the throat dry to some extent which can also add to the cough
. You must consult your Doctor regarding the requirement for inhaled bronchodilator
for use since you have wheezing
, then you can reduce Telekast-L as well.