They can: Oral decongestants such as sudafed (pseudoephedrine) can have a drying effect on the nose, mouth and eyes. This is from the anticholinergic effects. Even though decongestants are for decreasing congestion this drying side effect can be helpful for some and problematic for other people.
Answered 6/10/2019
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3 doctors weighed in across 2 answers
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