Hi
Thanks for posting your query.
I can appreciate your concern for the safety of Mucinex.
First of all the exact cause of your cough investigations like chest xray, sputum examination, CBC, ESR, etc should be done to find the underlying cause like infection, allergy, etc.
The troublesome fast heart beats,
anxiety,
dizziness, increase in BP associated with
Sudafed is NOT seen with the use of Mucinex, hence it is safer than Sudafed.
The side effects associated with the use of Mucinex are mild in nature which include nausea,
vomiting, some time
allergic rash.
Yes, plain Mucinex is not associated with pounding heart beats or aggravation of premature ventricular contractions (PVCs).
Hope this answers your query.
A feed back is appreciated.