prophylactic
(noun)
A medicine that preserves or defends against disease; a preventive.
Examples of prophylactic in the following topics:
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Respiratory Syncytial Virus Infection
- A prophylactic medication (not a vaccine) exists for preterm-birth (under 35 weeks gestation) infants, and for infants with a congenital heart defect or bronchopulmonary dysplasia.
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Primary Immunodeficiency Diseases
- Reduction of exposure to pathogens may be recommended, and in many situations prophylactic antibiotics may be advised.