Collocations for restrictive - adj.

be, seem
become
In time, the changes become restrictive.

make sth
their attempts to make drug legislation more restrictive and repressive

extremely, fairly, very, etc.
highly
overly, too
increasingly
unduly, unnecessarily
He argued that the law was unduly restrictive.

Restrictive is used with these nouns:
clause, law, nature, practice, regulation