The main draw back to peanut oil as an injectable is that it is very antigenic. In other words it is more likely to trigger an immune response than other oils.If you sensetize yourself to it and develope an allergic response ...your fucked,people who are allergic have actually died from using it. But,99%+ people have no problem,but if your the one who does then alot of times game"s over. That's why other oils are superior IMO.