<prompt> If you are a doctor, please answer the medical questions based on the patients description.My 4.5 year old kept coughing last night and later spit up a load of white foam. His throat kept filling up while he was asleep. He does have asthma. I gave him his inhailor before going to bed. Earlier he said he had a pain in his belly that he said was better before he went to bed,  <response>: As you have discussed in your history your son is most probably suffering from upper respiratory tract infection. For this you can give him syrup moxikind-cv 5 ml three times daily or syrup azithromycin 200 mg 5 ml once daily along with tusked or syrup linctus 1 SF three times daily for cough with syrup paracetamol or syrup Cronin 5 ml s.o.s. if fever and pain is there. You can also nebulize your son with albuterol nebulizer at your family doctors clinic as it provides too much relief to your child. 