Most benzodiazepines aren't soluble in water either.
The trick? Go ahead and guess.
Not using water to try and shoot your drug that isn't water soluble.
I don't see why injecting pure THC would be bad for your body. Granted, it could be, such as how injecting codeine results in pulmonary edema, but I don't see it as likely.
The problem here is obtaining said THC formulation that is pure enough to put directly into your veins.Would it work? Possibly. Would it be smart? No.If you can get the THC solution, and deem it worth possibly catastrophic results, then go for it. But you aren't going to feel a few CCs of vodka. Nor are you going to feel a few CCs of pure ethanol, even if it does go directly into your veins - and trust me, you're not going to want to put pure ethanol into your veins. Even vodka is probably too potent alcohol-wise for your veins - but don't quote me on that. Either way, no, it's not smart to shoot vodka. People have done it and lived, I guarantee that, but it doesn't make it smart. And you'd probably need at least one ounce (~30ml) of alcohol in your veins before you feel any effects, which would require a hospital IV Maybe not the correct term, but you should know what I mean (the large bags of saline and whatever drug they are giving you that is going into your veins). It would also probably (an estimate, so again, don't quote me on it) require a ~20% alcohol concentration in order to not fuck up your veins, which, if my estimation is anywhere near accurate, would require a 150ml injection for just one ounce of alcohol (the amount of alcohol typically in one beer, or one shot). I can pretty much guarantee you're not going to do that on your own at home.