Merck Manual

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Some Causes of Dry Mouth

Some Causes of Dry Mouth

Cause

Examples

Drugs

Drugs with anticholinergic effects

Antianxiety drugs

Antidepressants

Antiemetics

Antihistamines

Antipsychotics

Antispasmodics

Recreational/illegal

Marijuana (cannabis)

Methamphetamines

Tobacco

Other

Antihypertensive drugs

Antiparkinsonian drugs

Bronchodilators

Chemotherapy drugs

Decongestants

Diuretics

Meperidine, methadone, and other opioids

Systemic disorders

Other

Daytime or nighttime mouth breathing

Head and neck trauma (causing nerve injury)

Dehydration

Radiation therapy to the head and neck area

Viral infections