Dysfunction in the oral cavity caused by drugs, such as taste disorder and xerostomia, may affect a patient’s life. In the future, the number of patients with drug-induced taste disorder who have multiple diseases is expected to increase due to the aging of society. In order to clarify the condition of drug-induced taste disorder in dentistry, we compared it with past reports and conducted an analysis, including an overview. It is important for dentists to identify the cause of taste disorder and provide appropriate medical care.