I don't want to say the C-word....BUT....
it is a possibility.
There could be a tumor on the parathyroids or thyroid or a goiter that is pressing on a nerve. I had a one sided goiter that pressed on my laryngeal nerve, and changed my voice, for example.
Or you could have a swollen gland on one side due to infection, or even a <shudder> lymphoma.
That is why I think an examination is necessary.
When evaluating a side effect from a drug or supplement one needs to know that those do not cluster like that in one special area. Reactions would be more global.
Catching a serious thing in the throat early is the best prognosis if something dire is happening.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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