The very fact you need something akin to midazolam (a controlled drug that isn’t readily available, on the “streets” especially) just makes me wonder what is being injected. Non-pharmaceutical grade Ketamine? Even still, you’d need a ridiculous amount, specific tools and the know how to turn street grade ketamine powder into a viable IV form. Also, how the hell are there not more cases of air bubbles being injected into folks veins by accident? Doubt beasts are being polite enough to check for air bubbles and hitting veins first time.