purge (someone's) system

Translations
очистить (чью-то) систему
The doctor recommended a detox to purge her system of toxins.
Доктор порекомендовал детокс, чтобы очистить её систему от токсинов.
Definitions
To remove or eliminate unwanted elements, substances, or influences from someone's body or mind, often referring to a process of detoxification or cleansing.