Persistant dry cough...related to kids humaworm??

My son has had a nagging cough for about 6 days...the only thing he has done different is take the humaworm he weighs 71 lbs and I give him two caps a day...have you heard of any allergies to these ingredients or has anyone had this experience...I am freaking out...I know if I take him to his doctor he will get some crazy script no matter what the deal is...

it is a dry non-productive cough...no fever...no sore throat...we tried the acv with honey ginger and cayanne, ricolas, colliodal silver...so far it's still here and really bad at night...Please help...again(sorry)!!
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