Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that sensitivity and soreness of teeth while having cough and cold is not due to
Robitussin but is due to inflammation of the sinuses that occurs during cold as the sinuses drains through nose..
As the upper teeth are in close proximity with the sinuses, therefore they can become achy and sensitive..
Nothing to worry as it will resolve as the cold and cough will subside..
As of now you can do steam inhalations and take decongestant nasal sprays...
Do saline nasal irrigations..
You can take anti inflammatory painkiller like
Ibuprofen..
Take
anti histamines like Levocetrizine, cough expectorant like Gueifenesin and Robitussin has the same ingredient, therefore can be continued..
Sip on warm water..
In case if it does not improve in a week
consult a dentist and get evaluated to check for dentinal
hypersensitivity..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.