Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that the symptoms of heartburn along with
metallic taste in mouth,cough and chest rattling or wheezing can be most probably be due to Gastro-esophageal reflux disease also known as
Acid reflux..
I would suggest you to consult an Otolaryngologist and get evaluated and a thorough clinical evaluation and investigations like upper G.I Endoscopy can help in diagnosis and treatment can be planned accordingly..
In case if acid reflux is confirmed as the cause, you can be advised to take
proton pump inhibitors like
Pantoprazole or Omeprazole, antacids like
milk of magnesia, H2 blockers like Ranitidine.
You should avoid spicy and large meals..
Take small frequent meals..
Drink plenty of water and take more of Yoghurt in diet as it is a probiotic..
You should take short walks after meals, loose weight if obese and also do moderate workout..
Sleep with head slightly raised as compared to feet and recline in left lateral position..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.