Originally Posted by mrsD

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.