1.
to start to produce the results that are intended :
The aspirins soon take effect.
2.
to come into use; to begin to apply :
The new law takes effect from tomorrow.
1.
to start to produce the results that are intended :
The aspirins soon take effect.
2.
to come into use; to begin to apply :
The new law takes effect from tomorrow.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005