Hello,[/size]I took a Vivitrol(Naltrexone) shot on July 29th. This drug stays in your system for 30 days. Does anybody have any experience with this? I also take Chlorodizepoxide(LIBRIUM) almost daily. Is this risky? vitrol(Naltrexone) shot on July 29th. I am having a ceremony tomorrow and I am concerned with any risks such as serotonin syndrome. This drug stays in your system for 30 days. Does anybody have any experience with this? I also take Chlorodizepoxide(LIBRIUM) almost daily. itrol(Naltrexone) shot on July 29th. I am having a ceremony tomorrow and I am concerned with any risks such as serotonin syndrome. This drug stays in your system for 30 days. Does anybody have any experience with this? I also take Chlorodizepoxide(LIBRIUM) almost daily. This will be my fourth journey but am a little concerned about my safety this time. The last 3 times I had none of these drugs in my system. Thank you!