I hope you will enjoy your new job and find it very rewarding. I have worked with MH patients for 18 years. We gave Haldol and Prolixin injections in the hospital unit when I worked there, but I never gave any Haldol Decanoate or Prolixin Decanoate until I started working outpatient. I assume you are referring to decanoate meds? The first few I gave were challenging, but luckily, the patients I were so accustomed to getting the injection, they were very cooperative. You will need a bigger needle because the medication is in a thick oil. I always use 21gauge 1 1/2 inch needle and a 3cc syringe. The largest dose of Haldol Dec I ever gave was 300mg, so I gave 2 injections (one in each UOQ) of 150mg each. I don't think you can give over 200mg (2cc) in one injection. It is a good idea to draw it up, then change needles because the new needle will be sharper, and also because medication on the outside of the needle can be irritating to the tissue when injected. I always use gluteal (UOQ) because I hate giving shots in the deltoid, and have no experience with other deep muscle sites. Most patients are not equipped with good "targets," and sometimes it is not easy to find the correct site because their "landmarks" aren't as well defined as the ones pictured in textbooks. One doctor I worked with always ordered the Z-track technique, but I was never good at that. The medication goes in very slowly because of the thickness of the solution. Sometimes the medication will ooze back out, and an old nurse told me that leaving a tiny bit of air in the syringe helps prevent the leaking. It is important to rotate sites and be careful not to give it in the same place because after years of injections, they develop scaring. After injection, I hold slight pressure to the site. The old nurse said to massage the site a bit, but I don't. Sometimes decanoate meds are refered to as "depot" meds, I guess because once injected, the med is slowly absorbed over 2-4 weeks unlike regular meds that absorb fast. One last thing, I always cover the site with a band-aid because it just makes me feel better.