Since the Knoxville Police Department started using the opioid overdose reversal drug Naloxone a little over a year ago, it has been used to successfully save more than 40 people from a drug overdose in Knoxville.

KPD started using Naloxone in September 2015, and officers have used it 39 times as of Oct. 5, according to a report on the department’s Naloxone use.

KPD spokesman Darrell Debusk said they have already used Naloxone successfully three more times since the report was compiled.

So, in total officers have used Naloxone to save 42 lives.

The most prevalent drug found in the overdose cases is heroin. The drug was the cause of 20 of the 39 overdoses documented in the report. Heroin was also suspected or combined with another drug in four other cases.

Many of the other cases involved various types of prescription pills such as Percocet, Glipizide, Fentanyl, Hydrocodone and Benzodiazepine.

According to the study, 62 percent of the overdose victims have been female, and 56 percent have been white females. Out of the 39 cases included in the report, two were black females and none were black males.

The youngest overdose victim KPD has administered Naloxone to was 22, and the oldest was 56. The average age has been 36.

There have been two cases with two overdose victims; in one officers gave a half dose to each victim, in the other case each victim received a full dose, the report said.

Forty-one percent of the overdose cases happened on either a Friday or Saturday.

KPD has administered Naloxone to the same person on two different occasions (a white, 27-year-old female), and two people who were given Naloxone have had another overdose report since the initial dose, the report said.

Debusk noted that 54 percent of the people who overdosed and were saved by officers administering Naloxone have not committed a crime since.

All victims KPD officers have given Naloxone have survived.