1 The study process for the exam led to a broader knowledge base, a brush-up on familiar topics and an education on new aspects of the ASC industry.  The continuing education requirement to keep the credential up to date encourages CASC achievers to stay current on ASC issues.
Effects. Like heroin, morphine, and other opioid drugs, fentanyl works by binding to the body's opiate receptors, highly concentrated in areas of the brain that control pain and emotions.ike heroin, morphine, and other opioid drugs, fentanyl works by binding to the body's opiate receptors, highly concentrated in areas of the brain that control pain and emotions.
Read More. For me, it was different than some of the folks who comment that took pills orally. Fentanyl is extemely strong, it stays in your system for a long time as it is deposited into you fat cells, etc. That is the way I understand to have read it. I don't want to discourage you but for me, I just got better after day 18.