Typically OK: It is OK to do this in general as you swallow mucus from sinuses all the time with post nasal drip, but if you have black mucus, you should get that looked at and see a doctor.
Answered 10/8/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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