Thanks for using Health Care Magic.
Read your query.
Yellow coating is not a acute worrisome condition ,if it is dealt with properly.It can be due to a variety of factors including poor
oral hygiene,
fever ,
dehydration,digestive problems,certain medicines and many others.
*I would advice you to clean your tongue regularly with a soft toothbrush or a tongue scrapper.
*If you smoke or take tobacco ,stop it.
* Drink lots of water and keep hydrated as this will also reduce yellow tongue.
* If you have any issues with digestion ,get it treated with your doctor.
*Increase fiber content in your food and start with multivitamins.
If the yellow tongue and related symptoms are still persisting ,visit you Physician for further investigations and treatment.
Hope this was helpful.
Thanks and regards.