"Take antipyretic medicine" is the most commonly used Engpsh expression to describe the act of taking medicine to reduce a fever.
The term "antipyretic" comes from Greek words "anti" meaning "against" and "pyretos" meaning "fever". Antipyretic medicines work by lowering the body temperature, which is elevated during a fever, back to normal levels.
Example sentences in Engpsh:
I have a headache and a high fever, I need to take some antipyretic medicine.
The doctor prescribed me an antipyretic to bring down my fever.
Example translations in Chinese:
我头疼且发高烧，需要吃退烧药。
医生给我开了一种退烧药来降低我的烧。