Opioid Overdose Reversal Products Chemically Stable Past Expiration Date

by Colleen Fleiss on  November 7, 2018 at 11:19 PM Drug News
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Drugs administered to prevent opioid overdose deaths namely naloxone nasal spray (NNS) and naloxone injection (NIJ), otherwise known as NarcanŽ and EvzioŽ were found to be chemically stable up for at least ten months and beyond one year of the expiration date, respectively.
Opioid Overdose Reversal Products Chemically Stable Past Expiration Date
Opioid Overdose Reversal Products Chemically Stable Past Expiration Date

According to the National Institute on Drug Abuse, from 1996 to 2014, at least 26,500 opioid overdoses in the U.S. were reversed by laypersons using naloxone. The research, Evaluation of Chemical Stability of Naloxone Products Beyond Their Labeled Expiration Dates, was presented today at the 2018 American Association of Pharmaceutical Scientists (AAPS) PharmSci 360 Annual Meeting.

Researchers from the Marshall University School of Pharmacy and Appalachian College of Pharmacy evaluated the chemical stability of two different naloxone products, NNS-NarcanŽ and NIJ-EvzioŽ, past their labeled expiration dates, which currently have an 18-month to two-year shelf-life. "Naloxone has a short half-life which may result in healthcare and community providers carrying or storing outdated product," said presenting author, Mohammad Faisal Hossain, B.Pharm., M.Pharm., Ph.D., instructor of pharmaceutical science at Appalachian College of Pharmacy. "What makes our research unique is that the products tested were unused expired doses from these local providers."

Both NNS and NIJ were kept at room temperature, simulating real-life storage, for six-19 months past the labeled expiration dates. Using USP adopted chromatographic methods, the researchers assessed the therapeutic content and degradation impurities of NNS and NIJ. The average potency of naloxone in NNS was 102.8 percent +/-2.55 and NIJ was 105.98 percent +/- 1.25, both within the acceptance limit of 90 - 100 percent.

The study's principal investigator Charles Babcock Pharm.D., CDE, BCACP, assistant professor at Marshall University School of Pharmacy noted, "The country is experiencing an opioid epidemic and given the continued increase in opioid overdoses.

The next stage of the research will be to conduct extensive longer-term (five years) stability studies such as microbiological stability, photo-stability, and chemical stability. Hossain added, "Given the FDA Commissioner's recent statement, we hope that our research can be helpful as the agency discusses efforts to increase the availability of naloxone throughout the country."

Evaluation of Chemical Stability of Naloxone Products Beyond Their Labeled Expiration Dates will be presented Tuesday, Nov. 6, 12:30 p.m. - 1:30 p.m., Poster Forum 10 in the Walter E. Washington Convention Center.

Source: Eurekalert

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