taking effect

Verb

take effect (third-person singular simple present takes effect, present participle taking effect, simple past took effect, past participle taken effect)

1. (informal, usually) To become active; to become effective.
   • The medication won't begin to take effect for 3-4 hours.

   Synonyms:

   kick in

2. (informal, usually) To come into force, to come into effect, to inure.
   • The new regulations will take effect once they are approved by the Office of Administrative Law.