Welcome to HCM,
Cause of excessive salivation
might be due to poor oral hygiene
You might have some decay of teeth, deposition of tarter on your tooth, coating on your tongue or some ulcers in your mouth.
Consult oral surgeon and get examined.
Keep oral hygiene proper, remove coating on tongue.
Do regular gargling after taking any thing by mouth.
Avoid more use of chocolates, ice creams etc.
ok and bye.