What causes Dry Mouth?

There are several major known causes for Dry Mouth

People get Dry Mouth when their salivary glands in the mouth that make saliva are not working properly and do not secrete enough saliva. There are several reasons why salivary glands do not work properly:

  • Side effects of some medicines. More than 1800 medicines can cause the salivary glands to make less saliva. Among the medication classes that may cause dry mouth are (for further details, we recommend checking the list provided in //www.drymouth.info):

  • Analgesics
  • Anorexiants
  • Anti-Arrhythmic Medications
  • Anti-Ulcer Agents
  • Anticholinergics and Antispasmodics
  • Antihistamines and Decongestants
  • Antihypertensives
  • Cold and Cough Preparations
  • Digestives
  • Diuretics
  • Erectile Dysfunction Management
  • Gastrointestinal Agents
  • Immunologic Agents
  • Migraine Management
  • Muscle Relaxants
  • Nausea Medications
  • Osteoporosis Management
  • Parkinsonism Drugs
  • Psychotropic Agents:

    • Antianxiety Agents
    • Antidepressants
    • Antimanic Agents
    • Antipsychotic Agents
    • Obsessive-Compulsive Medication
    • Sedative and Hypnotic Agents
  • Seizure Disorder Medication
  • Sleep Aids
  • Smoking Cessation Aids
  • Treatment of Attention Deficit / Hyperactivity Disorder
  • Disease. Some diseases affect the salivary glands: Sjögren's Syndrome, HIV/AIDS, diabetes, depression and Parkinson's disease can all cause Dry Mouth.
  • Radiation therapy. The salivary glands usually are damaged upon radio-therapy during cancer treatment.
  • Chemotherapy. Drugs used to treat cancer can make saliva thicker, causing the mouth to feel dry.
  • Nerve damage. Injury to the head or neck can damage the nerves that tell salivary glands to make saliva.

Other causes of Dry Mouth

In addition, many cases of Dry Mouth are due to other causes not listed here, or may be of unknown origin (idiopathic).