You are given Growth serum to become a better cop

Description: You always need help doing your job as a police officer, as you are small and scrawny. your coworker is fed up with having to help you arrest everybody and has found a solution. he has got his hands on a growth serum that has been confiscated that he does not know too much about, this is a desperate time. he does not want you to lose your job so you allow him to administer the serum. what happens next?