A member asked:

Why do i get a headache when i take mucinex d? could i be allergic or is it a side effect?

Q: why do i get a headache when i take mucinex d? could i be allergic or is it a side effect?

: A person is considered "intolerant" of a medication that causes such side effects, not allergic. Here the decongestant added to the Mucinex may be the culprit. Decongestants can elevate heart rate and blood pressure along with other symptoms. The general rule is if it hurts when you do that----don't do that.

A doctor has provided 1 answer

Dr. James Ferguson answered

A person is considered "intolerant" of a medication that causes such side effects, not allergic. Here the decongestant added to the Mucinex may be the culprit. Decongestants can elevate heart rate and blood pressure along with other symptoms. The general rule is if it hurts when you do that----don't do that.

Dr Kuitems agreed

Answered 2/9/2023

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A member asked:

Why do i get a headache when i take mucinex d? could i be allergic or is it a side effect?

A doctor has provided 1 answer

Dr. James Ferguson answered

Dr Kuitems agreed

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