Lots of medicine prescribed in Japan for persistent cough

[tokyoteacher]

Hello,

I have had a cough for 3 weeks.  My throat is tickly and occasionally I cough up yellow phlegm, but the symptoms are bearable and it is just the cough and a mild sore throat - no fever, chest pain etc.  The doctor here in Tokyo took a look in my mouth and ruled out what that test indicates (viral infection?).  Then he said he didn't know why I was coughing and prescribed the following six medications:

Codeine phosphate (antitussive, expecorant)
Kipres - montelukast sodium (antiallergic agent)
Carbocysteine (expectorant)
Azithromycin (anti-bacterial)
Adoair inhaler - salmeterol xinafoate-fluticasone (antiasthmatic oral inhalation)
Tulobuterol (brochodilator)

This seems like overkill to me.  Which, if any, of these should I take?

Thanks very much for your advice

[Red_Star]

Take vitamin D3 supplements. I do. Best thing I ever did. Goodbye cold, flu, bronchitis, strep throat...

Excerpt from: UCLA Scientists: Vitamin D Deficiency Linked To Increase In All Diseases And Illnesses...

"A group of scientists from UCLA recently published a paper, “Toll-like receptor triggering of a vitamin D-mediated human antimicrobial response“, wherein they revealed that Vitamin D, a naturally occurring steroid hormone was a very potent antibiotic.  

Dr. Philip Liu and colleagues at UCLA wrote that instead of directly killing bacteria and viruses, the steroid hormone Vitamin D increases the body’s production of a remarkable class of proteins, called antimicrobial peptides (link is to a pdf file called “Antimicrobial Peptides…Small, But Potent Killers“).  

The 200 known antimicrobial peptides directly and rapidly destroy the cell walls of bacteria, fungi, and viruses, including all influenza viruses, and play a key role in keeping the lungs free of infection."

[tokyoteacher]

For some more background - I am a non-smoker, exercise regularly, and have an active lifestyle.  I teach children and may have contracted something from one of them - three weeks ago I lost my voice entirely for about 4 days.  There was a mild fever associated with that, but it went away and the voice came back, but the mild sore throat and cough are left 3 weeks later.