Supposed to receive vivtrol(naltrexone shot extended release) today and doc was not in so it's not until tomorrow. Took 12.5 mg of naltrexone in pill form to test if was ready for the shot. Went well no feelings of precipitated withdrawal and feel fine. Question: could you get high tonight on heroin and since there is no physical dependence obviously to opiates because of the good reaction to 12.5 mg of naltrexone still receive the shot tomorrow afternoon