My friend's son was taken by his mother to the doctor because he had a cough, the sort of thing that is not a constant/frequent but happens after the child has been swimming for example.
Now I have heard of this before as my wife's niece was prescribed the same treatment for a cough. Both children are physically active running dancing and happy, so I don't understand this 6 months treatment.
My friend had an X-ray done on his son's chest which the doctor used to determine that the treatment was necessary, but when asked exactly the problem he could not describe an actual name for the problem or what he could see in the X-ray.

Dr Alan, have you heard of this before? Or anyone else know why 6 months treatment is required? I don't believe such a long treatment is necessary and the treating doctors are just in it for the money they can make from selling the medicine.

Thanks