Dry Mouth at Night: 8 Possible Causes You Should Not Ignore

Possible medication groups linked with dry mouth may include antihistamines, some antidepressants, certain blood pressure medicines, decongestants, muscle relaxants, some pain medicines, and medications for anxiety, sleep, or bladder symptoms.

The source article mentions antihistamines, antidepressants, and blood pressure medications as examples of medicines that may reduce saliva production.

Do not stop prescribed medicine on your own. If dry mouth began after starting a new medication or changing a dose, ask your doctor or pharmacist whether the medicine could be involved and whether safer adjustments are possible.

4. Acid Reflux or GERD