I would like to know if u can have 4 vivitrol naltrexone injections in a week.My questions is if this is possible as a treatment for someone who has been an opiat addict.I am asking due to a family member who insists that has had this treatment.If so is it possible 10days after these shots to use heroin and get normally high?Also is it possible to get more than ususally high of marijuana after this sort of treatment?If he had the treatment,and then used heroin would it stop showing heroin in a drug test?And last what type of symptoms would we view from the vivitrol shots?Thank you in advance.