frank gould know what is he's talking about. the stoneham firefighter considers himself a bystander at home. his son is recovering heroin addict. >> he's my son. i love him. i will, i have this in my house. because, god forbid if i need to use it i have it. instructors in the class explain the signs of overdose and how narcan reverses the potentially deadly effects. putting narcan spray together. >> it takes approximately 3 to 5 minutes to work. if you're not getting any response from that person in 3 to 5 minutes you can go ahead and give another dose you're not going to hurt them. narcan relatively easy to administer and we found its also easy to get. >> here's your receipt the pharmacist a walgreen's in malden gave us narcan no questions asked even showed us how to use it. ready to go. people are stunned to not be afraid to ask for it or feel ashamed. it is saving lives. and last two years nearly 1500 addicts in massachusetts died of say some of those deaths could have been an avoid if more people were trained to use narcan.

. >> reporter: frank gould knows what he is talking about. the firefighter considers himself a bystander at home. his son is a recovering heroin addict. >> he is my son. i love him. because god forbid, if i need to use it, i have it. >> reporter: narcan reversing the potentially deadly effects of overdose. the bystanders get some practice putting the narcan spray together. >> it takes approximately three to five minutes to work. if you are not getting any response from that person in three to five minutes, you can give another dose. you are not going to hurt them. >> reporter: nar skan relatively easy to administer. it is also easy to get, we found. >> here is your receipt. >> reporter: the pharmacist at walgreen's gave us narcan no questions asked. he showed us how to use it. >> you want to screw this in. ready to go. people are starting to not be or feel ashamed. it is saving lives. in the last two years, nearly 1,500 addicts in massachusetts died of an opiate overdose. doctors who treat substance abuse say some of those deaths could have b