This is Dr. David
you could have a oral thrush fungal infection causing the white slimy coat on your tongue.
you should see a doctor to get your mouth examined.
I bet you have a oral thrush fungal infection.
don't use hydrogen peroxide which will not help fight fungal infections.
your doctor can give you an antifungal mouth rinse like nystatin swish and swallow or diflucan antifungal pill to clear this potential fungal infection.
let me know if you have other questions.
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