Articles: narcotic-antagonists.
-
Randomized Controlled Trial
Pharmacokinetics of concentrated naloxone nasal spray over first 30 minutes post-dosing: analysis of suitability for opioid overdose reversal.
Lack of non-injectable naloxone formulations has impeded widespread take-home provision for the prevention of heroin/opioid overdose deaths. For non-injectable formulations that are finally being investigated, rapid onset of action and sufficient bioavailability will be vital. We present analysis of data from a study of concentrated naloxone nasal spray formulations. Our aims are: to assess (1) pharmacokinetic properties and (2) suitability for overdose reversal in terms of naloxone absorption within 30 minutes post-dosing. ⋯ Concentrated naloxone nasal spray has a promising pharmacokinetic profile, with substantial bioavailability. Its early absorption time-course suggests that concentrated nasal naloxone is suitable for emergency administration in the community, where rapid restoration of respiratory function is essential for opioid overdose reversal.
-
Naloxegol is a peripherally acting mu-opioid receptor antagonist for opioid-induced constipation in adults with chronic noncancer pain. This drug's once-daily oral formulation can be used as monotherapy and helps to decrease the constipating effects of opioid therapy; however, it has been associated with abdominal pain.
-
Randomized Controlled Trial
Ondansetron Does Not Reduce Withdrawal in Patients With Physical Dependence on Chronic Opioid Therapy.
Individuals taking opioids for an extended period of time may become physically dependent, and will therefore experience opioid withdrawal should they stop taking the medication. Previous work in animal and human models has shown that the serotonin (5-HT3) receptor may be implicated in opioid withdrawal. In this study, we investigated if ondansetron, a 5-HT3-receptor antagonist, could reduce the symptoms of opioid withdrawal after chronic opioid exposure in humans. ⋯ We hypothesized that ondansetron would reduce opioid withdrawal symptoms in human subjects, but found no difference in withdrawal severity between ondansetron and placebo sessions. These findings suggest that more investigation may be necessary to determine if 5-HT3-receptor antagonists are suitable treatment options for opioid withdrawal.
-
Public health reports · Sep 2017
Awareness, Possession, and Use of Take-Home Naloxone Among Illicit Drug Users, Vancouver, British Columbia, 2014-2015.
Although take-home naloxone (THN) programs are integral in strategies to prevent overdose deaths among opioid users, the uptake of THN among people who use drugs (PWUD) (including non-opioid users) is unknown. The objectives of this study were to determine awareness, possession, and use of THN among PWUD in Vancouver, Canada, and identify barriers to adopting this strategy. ⋯ Efforts to improve knowledge of and participation in the THN program may contribute to reduced opioid overdose mortality in Vancouver.