Dictionary of Cancer Terms
View in Spanish: Interacción de medicamentos
Drug interaction (… IN-ter-AK-shun)
A change in the way a drug acts in the body when taken with certain other drugs, herbals, or foods, or when taken with certain medical conditions. Drug interactions may cause the drug to be more or less effective, or cause effects on the body that are not expected.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.