halitosis

Over the years I have gone to several different dentists for help with halitosis.  I have always gone for two teeth cleanings a year and have brushed, flossed and rinsed twice a day.  I have searched the internet and asked the dentists for recommendations.  I've tryed Therabreath, Closystem, profresh and baking soda/peroxide.  They seem to all work for a while and then do not.  Profresh has probably worked the best, but not for long.  All of these products say if they don't work that you have a gastroenterology problem.  
Please give me some advise.

Thank you,
Cheryl Parkman

[mammo]

My son-in-law had a very serious case of this.  He went to the doctor and was put on some type of medication which cleared it up.  I think it's time you seek medical help.

[supertrooper87]

can you find out the name of the medication