What are the side effects of american injection made for drug addiction?

VIVITROL?????: It's not an "american" injection, but I am assuming you mean vivitrol, an injectable form of Naltrexone given intramuscularly, which was approved for alcoholism many years ago, and more recently approved for opiate abuse. It can cause local injection reactions, including serious infections and some pain, but these are rare. There may be increased depression, in some cases severe, but also are rare.