If I were to add narcan, most likely I would have to draw up a dose in a syringe, cap it and vacuum seal. then the user would put it in the fridge. They do have preservatives in it but I wouldn't be able to go buy a case of the bottles. Since I own horses, I will be able to get a big bottle and put the average dose in each syringe. would any of you be opposed to receiving it this way? Ill also keep trying to get multiple vials.