The Food and Drug Administration releases warnings to patients using patches that emit the painkiller fentanyl.

Currently, 120 deaths associated with the patches are under federal investigation

The Food and Drug Administration released warnings Friday to patients using patches that emit the painkiller fentanyl.

Currently, 120 deaths associated with the patches are under federal investigation

The government is currently investigating 120 deaths among patients using patches containing the painkiller fentanyl, warning patients Friday to properly use the narcotic, in order to avoid a potentially fatal overdose.

The Food and Drug Administration is currently investigating whether the deaths were related to inappropriate use of the painkiller or the quality of the product