Waking up with a parched mouth—often called “cottonmouth”—is more than just uncomfortable. Chronic nighttime dry mouth (medically known as xerostomia) can increase your risk of cavities, gum disease, and even sleep disruption. While occasional dryness is normal, frequent episodes often point to an underlying cause.
Here are 8 common reasons—and what you can do about them:
1. Mouth Breathing During Sleep
- Why: Nasal congestion (from allergies, colds, or deviated septum) forces you to breathe through your mouth, drying out saliva.
- ✅ Try:
- Use a humidifier in your bedroom
- Try nasal strips or saline spray before bed
- Treat underlying allergies
2. Medications (Very Common Cause)
- Over 400 medications list dry mouth as a side effect, including:
- Antihistamines (e.g., Benadryl)
- Blood pressure drugs (diuretics, beta-blockers)
- Antidepressants and anti-anxiety meds
- Muscle relaxants
- ✅ Try:
- Ask your doctor about alternative medications
- Sip water before bed
- Use a saliva substitute (like Biotene)
