opiate dependence
"Vivitrol does an excellent job at blocking your opiate receptors, preventing you from getting high. I've been a heavy heroin/oxycodone addict for the last 6 years. This was my first real attempt to quit and decided on Vivitrol because it's non habit forming. I've been on the shot for 5 months now. The reason I give it a so so rating is because it does nothing for your urges and cravings. That's a battle you still have to fight on your own. After my first injection I experienced "brain fog", rapid heartbeat, high blood pressure for the next 24 hours. I was 14 days clean prior to the injection. The next 4 injections went smooth. Vivitrol also seems to effect my sleep pattern, bowel movements, and sex drive for two after each of the injections"