Cevimeline is primarily used in the treatment of dry mouth, a condition often associated with Sjögren's syndrome, an autoimmune disorder that affects the glands producing tears and saliva. By stimulating the salivary and sweat glands, it helps increase saliva production, providing relief from the discomfort of dry mouth and improving oral health. It is also sometimes prescribed for patients experiencing dry mouth as a side effect of radiation therapy for head and neck cancers. The medication works by activating muscarinic receptors, which enhances glandular secretion. Patients typically take it orally, and it is important to follow the prescribed dosage to manage symptoms effectively while minimizing potential side effects such as sweating, nausea, or gastrointestinal discomfort.