1 doctor weighed in:

Can you get constipation from using allergy medicines every 4 hours for severe allergies?

1 doctor weighed in
Dr. William Culviner
ENT - Head & Neck Surgery

In brief: Side effect possible

Constipation is not a common side effect of antihistamines.
Common side effects might be drowsiness, dizziness, dry mouth and throat. However, constipation is a possibility. You should see your doctor for other allergy rx suggestions.

In brief: Side effect possible

Constipation is not a common side effect of antihistamines.
Common side effects might be drowsiness, dizziness, dry mouth and throat. However, constipation is a possibility. You should see your doctor for other allergy rx suggestions.
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