Antihistamines may cause dryness of the mouth, nose, and throat. Some antihistamines are more likely to cause dryness of the mouth than others . For temporary relief of mouth dryness, use sugarless candy or gum, melt bits of ice in your mouth, or use a saliva substitute.
Do antihistamines dry you out?
Antihistamines basically work by “drying you up”, so anything involving fluid in your body will decrease—including urine.
What are the most common side effects of antihistamines?
Some of the common side effects of first-generation antihistamines include:
- Drowsiness.
- Dry mouth, dry eyes.
- Blurred or double vision.
- Dizziness and headache.
- Low blood pressure.
- Mucous thickening in the airways.
- Rapid heart rate.
- Difficulty urinating and constipation.
