A chemical radio jammer?

[Moreno]

In "Almost human" sci-fi series movie http://www.imdb.com/title/tt2654580/ 

an agent drinks some substance provided by police to make his body work as a radio beamer and later a criminals forced him to drink another substance to jam the signal.

I wonder if there exist some metals or another substances which are harmless to humans and which will dissolve in blood been ingested. And which will jam any radio signals.

 

[John Cuthber]

Not possible.