Topzle Topzle

Fentanyl

Updated: Wikipedia source

Fentanyl

Fentanyl is a highly potent synthetic opioid of the piperidine family, used primarily as pain medication. It is 30 to 50 times more potent than heroin and 100 times more potent than morphine. Its primary clinical use is in pain management for cancer patients and those recovering from surgery. Fentanyl is also used as a sedative for intubated patients. Depending on the method of delivery, fentanyl can be very fast acting and ingesting a small quantity can cause overdose. Fentanyl works by activating μ-opioid receptors. Fentanyl is sold under the brand names Actiq, Duragesic, and Sublimaze, among others. Pharmaceutical fentanyl's adverse effects are similar to those of other opioids and narcotics, including addiction, confusion, respiratory depression (which, if extensive and untreated, may lead to respiratory arrest), drowsiness, nausea, visual disturbances, dyskinesia, hallucinations, delirium (including narcotic delirium), narcotic ileus, muscle rigidity, constipation, loss of consciousness, hypotension, coma, and death. Alcohol and other drugs (e.g., cocaine and heroin) can synergistically exacerbate fentanyl's side effects. Naloxone and naltrexone are opioid antagonists that reverse the effects of fentanyl. Fentanyl was first synthesized by Paul Janssen in 1960 and was approved for medical use in the United States in 1968. In 2015, 1,600 kilograms (3,500 pounds) were used in healthcare globally. As of 2017, fentanyl was the most widely used synthetic opioid in medicine; in 2019, it was the 278th most commonly prescribed medication in the United States, with more than a million prescriptions. It is on the World Health Organization's List of Essential Medicines. Fentanyl is contributing to an epidemic of synthetic opioid drug overdose deaths in the United States. From 2011 to 2021, deaths from prescription opioid (natural and semi-synthetic opioids and methadone) per year remained stable, while synthetic opioid (primarily fentanyl) deaths per year increased from 2,600 overdoses to 70,601. Since 2018, fentanyl and its analogues have been responsible for most drug overdose deaths in the United States, causing over 71,238 deaths in 2021. Fentanyl constitutes the majority of all drug overdose deaths in the United States since it overtook heroin in 2018. The United States National Forensic Laboratory estimates fentanyl reports by federal, state, and local forensic laboratories increased from 4,697 reports in 2014 to 117,045 reports in 2020. Fentanyl is often mixed, cut, or ingested alongside other drugs, including cocaine and heroin. Fentanyl has been reported in pill form, including pills mimicking pharmaceutical drugs such as oxycodone. Mixing with other drugs or disguising as a pharmaceutical makes it difficult to determine the correct treatment in the case of an overdose, resulting in more deaths. In an attempt to reduce the number of overdoses from taking other drugs mixed with fentanyl, drug testing kits, strips, and labs are available. Fentanyl's ease of manufacture and high potency makes it easier to produce and smuggle, resulting in fentanyl replacing other abused narcotics and becoming more widely used.

Infobox

Pronunciation
/ˈfɛntəˌnɪl/
Trade names
Actiq, Duragesic, Sublimaze, others
AHFS/Drugs.com
Monograph
MedlinePlus
a605043
License data
mw- US DailyMed: Fentanyl
Pregnancycategory
AU: C
Dependenceliability
High
Routes ofadministration
Buccal, epidural, intramuscular, intrathecal, intravenous, sublingual, transdermal
Drug class
Opioid
ATC code
N01AH01 (WHO) N02AB03 (WHO)
Legal status
AU: S8 (Controlled drug) BR: Class A1 (Narcotic drugs) CA: Schedule I DE: Anlage III (Special prescription form required) NZ: Class B UK: Class A US: Schedule II UN: Narcotic Schedule I EU: Rx-only
Bioavailability
Transdermal: 90–92% Intranasal: 89% Buccal: 51% (tablets), 71% (film) Sublingual: 54% (Abstral tablets), 76% (spray) Oral: 35% Inhalation: 56–96% IM & IV: 100%
Protein binding
80–85%
Metabolism
Liver, primarily by CYP3A4 Norfentanyl Despropionylfentanyl (minor) Hydroxyfentanyl (minor) Hydroxynorfentanyl (minor secondary metabolite)
Onset of action
5 minutes
Elimination half-life
IV: 6 mins (T1/2 α) 1 hours (T1/2 β) 16 hours (T1/2 ɣ)[citation needed]Intranasal: 15–25 hoursTransdermal: 20–27 hoursSublingual: 5–13.5 hoursBuccal: 3.2–6.4 hours
Duration of action
IV: 30–60 minutes
Excretion
Mostly urinary (metabolites, < 10% unchanged drug)
CAS Number
437-38-7 Y
PubChem CID
3345
IUPHAR/BPS
1626
DrugBank
DB00813 Y
ChemSpider
3228 Y
UNII
UF599785JZ
KEGG
D00320 Y
ChEBI
CHEBI:119915 Y
ChEMBL
ChEMBL596 Y
PDB ligand
7V7 (PDBe, RCSB PDB)
CompTox Dashboard (EPA)
DTXSID9023049
ECHA InfoCard
100.006.468
Formula
C22H28N2O
Molar mass
336.479 g·mol−1
3D model (JSmol)
Interactive image
Density
1.1 g/cm3
Melting point
87.5 °C (189.5 °F)

Tables

Fentanyl at opioid receptors[116] · Pharmacology › Mechanism of action
MORTooltip μ-opioid receptor
MORTooltip μ-opioid receptor
Affinities, KiTooltip Inhibitor constant
MORTooltip μ-opioid receptor
Affinities, KiTooltip Inhibitor constant
DORTooltip δ-opioid receptor
Affinities, KiTooltip Inhibitor constant
KORTooltip κ-opioid receptor
Ratio
MOR:DOR:KOR
0.39 nM
0.39 nM
Affinities, KiTooltip Inhibitor constant
0.39 nM
Affinities, KiTooltip Inhibitor constant
>1,000 nM
Affinities, KiTooltip Inhibitor constant
255 nM
Ratio
1:>2564:654
Affinities, KiTooltip Inhibitor constant
Ratio
MORTooltip μ-opioid receptor
DORTooltip δ-opioid receptor
KORTooltip κ-opioid receptor
MOR:DOR:KOR
0.39 nM
>1,000 nM
255 nM
1:>2564:654

References

  1. Today's Medical Assistant: Clinical and administrative procedures
    https://books.google.com/books?id=YalYPI1KqTQC&pg=PA571
  2. European Medicines Agency (EMA)
    https://www.ema.europa.eu/en/medicines/human/EPAR/instanyl
  3. European Medicines Agency (EMA)
    https://www.ema.europa.eu/en/medicines/human/EPAR/effentora
  4. StatPearls
    https://www.ncbi.nlm.nih.gov/books/NBK555968/
  5. Anesthesiology
    https://doi.org/10.1097%2F00000542-198906000-00008
  6. Heliyon
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10746457
  7. Pain Medicine
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2955962
  8. Anesthesia and Analgesia
    https://doi.org/10.1213%2FANE.0b013e3182575cbf
  9. Clinical Pharmacology: Advances and Applications
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3726301
  10. British Journal of Clinical Pharmacology
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1873979
  11. FDA.gov
    https://www.accessdata.fda.gov/drugsatfda_docs/label/2013/016619s034lbl.pdf
  12. Xenobiotica; the Fate of Foreign Compounds in Biological Systems
    https://doi.org/10.3109%2F00498254.2014.971093
  13. Clinically Oriented Pharmacology
    https://books.google.com/books?id=PaOhT_4zBL8C&pg=PA172
  14. "Fentanyl, Fentanyl Citrate, Fentanyl Hydrochloride"
    https://www.drugs.com/monograph/fentanyl-fentanyl-citrate-fentanyl-hydrochloride.html
  15. "Guideline for administration of fentanyl for pain relief in labour"
    http://rcp.nshealth.ca/sites/default/files/clinical-practice-guidelines/fentanyl.pdf
  16. Nature
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6848196
  17. U.S. Centers for Disease Control and Prevention (CDC)
    https://www.cdc.gov/opioids/basics/fentanyl.html
  18. MedlinePlus
    https://medlineplus.gov/druginfo/meds/a605043.html
  19. StatPearls
    https://www.ncbi.nlm.nih.gov/books/NBK459275/
  20. National Institute on Drug Abuse
    https://web.archive.org/web/20230220094916/https://nida.nih.gov/research-topics/fentanyl
  21. National Institute on Drug Abuse
    https://web.archive.org/web/20230511222756/https://nida.nih.gov/publications/drugfacts/fentanyl
  22. Cleveland Clinic
    https://my.clevelandclinic.org/health/drugs/18085-fentanyl-injection
  23. Journal of Pain and Symptom Management
    https://doi.org/10.1016%2F0885-3924%2892%2990047-L
  24. Narcotic Drugs Estimated World Requirements for 2017 / Statistics for 2015
    https://www.incb.org/documents/Narcotic-Drugs/Technical-Publications/2016/Narcotic_Drugs_Publication_2016.pdf
  25. LiverTox
    https://web.archive.org/web/20170107002718/https://livertox.nlm.nih.gov/FentanylAndAnalogues.htm
  26. ClinCalc
    https://clincalc.com/DrugStats/Top300Drugs.aspx
  27. ClinCalc
    https://clincalc.com/DrugStats/Drugs/Fentanyl
  28. World Health Organization model list of essential medicines
    https://hdl.handle.net/10665%2F345533
  29. National Institute on Drug Abuse
    https://web.archive.org/web/20230223163541/https://nida.nih.gov/research-topics/trends-statistics/overdose-death-rates
  30. CBS News
    https://www.cbsnews.com/news/fentanyl-no-1-opioid-overdose-killer-over-heroin-vicodin-oxycontin/
  31. U.S. Centers for Disease Control and Prevention (CDC)
    https://www.cdc.gov/nchs/pressroom/nchs_press_releases/2022/202205.htm
  32. "Fentanyl"
    https://www.dea.gov/factsheets/fentanyl
  33. DrugsData
    https://www.drugsdata.org/
  34. DanceSafe
    https://dancesafe.org/drug-checking/
  35. Goodman & Gilman's: The pharmacological basis of therapeutics
    https://search.worldcat.org/oclc/993810322
  36. Miller's Anesthesia
    https://search.worldcat.org/oclc/1124935549
  37. Annals of Emergency Medicine
    https://doi.org/10.1016%2Fj.annemergmed.2013.10.015
  38. Pain Physician
    http://www.painphysicianjournal.com/current/pdf?article=MTg4MQ%3D%3D&journal=74
  39. Essentials of Regional Anesthesia
    https://dx.doi.org/10.1007/978-1-4614-1013-3_11
  40. Regional Anesthesia and Pain Medicine
    https://rapm.bmj.com/content/33/4/380
  41. The Korean Journal of Pain
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4099232
  42. European Journal of Clinical Pharmacology
    https://doi.org/10.1007%2Fs00228-005-0967-9
  43. International Journal of Obstetric Anesthesia
    https://researchonline.nd.edu.au/cgi/viewcontent.cgi?article=2384&context=med_article
  44. Annals of Emergency Medicine
    https://doi.org/10.1016%2Fj.annemergmed.2013.10.025
  45. The Cochrane Database of Systematic Reviews
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6544782
  46. Scandinavian Journal of Pain
    https://doi.org/10.1016%2Fj.sjpain.2017.07.010
  47. Metabolism
    https://doi.org/10.1016%2Fj.metabol.2010.07.010
  48. Austria-Codex
  49. NPS Medicinewise
    https://www.nps.org.au/radar/articles/fentanyl-patches-durogesic-for-chronic-pain#:~:text=The%20patch%20should%20be%20changed,and%20100%20micrograms%20per%20hour.
  50. The Cochrane Database of Systematic Reviews
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6457928
  51. "Abstral sublingual tablets"
    http://www.medicines.org.uk/emc/medicine/21371/SPC/Abstral+Sublingual+Tablets/
  52. P & T
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3086091
  53. BMJ Supportive & Palliative Care
    https://doi.org/10.1136%2Fbmjspcare-2011-000020.71
  54. Current Opinion in Nephrology and Hypertension
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7753951
  55. Journal of Experimental & Clinical Cancer Research
    https://doi.org/10.1186%2F1756-9966-28-61
  56. BMC Palliative Care
    https://doi.org/10.1186%2F1472-684X-13-46
  57. Mayo Clinic
    https://www.mayoclinic.org/drugs-supplements/fentanyl-transdermal-route/precautions/drg-20068152
  58. Wired
    https://www.wired.com/2009/09/airborne-emts-in-astan/
  59. BMC Pulmonary Medicine
    https://doi.org/10.1186%2Fs12890-021-01647-8
  60. Journal of Pain and Symptom Management
    https://doi.org/10.1016%2Fj.jpainsymman.2013.02.019
  61. American Journal of Health-System Pharmacy
    http://www.medscape.com/viewarticle/505784_2
  62. Anesthesia and Analgesia
    https://doi.org/10.1213%2F01.ANE.0000093314.13848.7E
  63. "Fentanyl"
    https://www.accessdata.fda.gov/scripts/cder/daf/
  64. The Annals of Pharmacotherapy
    http://www.medscape.com/viewarticle/549359_3
  65. The Journal of Emergency Medicine
    https://doi.org/10.1016%2Fj.jemermed.2008.01.003
  66. Journal of Clinical Pharmacy and Therapeutics
    https://doi.org/10.1111%2Fj.1365-2710.2007.00813.x
  67. Anesthesia Progress
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2515983
  68. Der Anaesthesist
    https://pubmed.ncbi.nlm.nih.gov/6116461
  69. Chest
    https://doi.org/10.1378%2Fchest.88.5.779
  70. Acta Anaesthesiologica Scandinavica
    https://doi.org/10.1111%2Fj.1399-6576.1982.tb01762.x
  71. Drug Safety Update
    https://web.archive.org/web/20150101054043/http://www.mhra.gov.uk/Publications/Safetyguidance/DrugSafetyUpdate/CON025631
  72. "Fentanyl patch can be deadly to children"
    https://www.drugs.com/fda-consumer/fentanyl-patch-can-be-deadly-to-children-214.html
  73. Annals of Saudi Medicine
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6089740
  74. Pharmacology and Physiology for Anesthesia: Foundations and clinical application
    https://search.worldcat.org/oclc/1063667873
  75. Palliative Medicine
    https://doi.org/10.1177%2F026921639701100515
  76. Acta Anaesthesiologica Scandinavica
    https://doi.org/10.1111%2Fj.1399-6576.1995.tb04180.x
  77. Palliative Medicine
    https://doi.org/10.1191%2F0269216303pm838cr
  78. Basic Physiology for Anaesthetists
    https://books.google.com/books?id=5ma8BQAAQBAJ&pg=PA107
  79. Clinical Toxicology
    https://doi.org/10.3109%2F15563650.2016.1157722
  80. The Journal of Pharmacology and Experimental Therapeutics
    https://web.archive.org/web/20200309222939/https://jpet.aspetjournals.org/content/jpet/371/2/453.full-text.pdf
  81. Contemporary Pedriatics
    https://link.gale.com/apps/doc/A464982083/AONE?u=anon~4087cc99
  82. Journal of Pain Research
    https://doi.org/10.2147%2FJPR.S280462
  83. "Fentanyl drug profile"
    https://www.emcdda.europa.eu/publications/drug-profiles/fentanyl_en#:~:text=The%20estimated%20lethal%20dose%20of,poly-substance%20use%20was%20involved.
  84. Forensic Sciences Research
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6609322
  85. RxList
    https://www.rxlist.com/narcan-side-effects-drug-center.htm
  86. Pharmaceutical Journal
    http://www.pharmaceutical-journal.com/news-and-analysis/notice-board/fentanyl-patches-warning/20066029.article
  87. Pharmaceutical Journal
    http://www.pharmaceutical-journal.com/news-and-analysis/news-in-brief/mhra-warns-about-fentanyl-patches-after-children-exposed/20065930.article
  88. The New York Times
    https://www.nytimes.com/interactive/2017/09/02/upshot/fentanyl-drug-overdose-deaths.html
  89. Overdose Death Rates
    http://www.drugabuse.gov/related-topics/trends-statistics/overdose-death-rates
  90. "Reported law enforcement encounters testing positive for Fentanyl increase across U.S."
    https://www.cdc.gov/drugoverdose/deaths/fentanyl-encounters/index.html
  91. The Huffington Post
    https://web.archive.org/web/20160605035409/http://www.huffingtonpost.ca/news/fentanyl-overdose/
  92. Fentanyl-detected in illicit drug overdose deaths, January 1, 2012 to April 30, 2016
    https://web.archive.org/web/20160625235638/http://www2.gov.bc.ca/assets/gov/public-safety-and-emergency-services/death-investigation/statistical/fentanyl-detected-overdose.pdf
  93. Global News
    http://globalnews.ca/news/3637148/fentanyl-overdoses-canada-2017/
  94. Rolling Stone
    https://www.rollingstone.com/culture/culture-features/fentanyl-cocaine-how-contamination-happens-735155/
  95. Vice
    https://www.vice.com/en/article/how-much-fentanyl-is-actually-in-cocaine/
  96. "What it means for the U.S. that China will label Fentanyl as 'a controlled substance'"
    https://www.npr.org/2018/12/03/673022614/what-it-means-for-the-u-s-that-china-will-label-fentanyl-as-a-controlled-substan
  97. U.S. Drug Enforcement Administration
    https://www.dea.gov/sites/default/files/2020-03/DEA_GOV_DIR-008-20%20Fentanyl%20Flow%20in%20the%20United%20States_0.pdf
  98. The Guardian
    https://www.theguardian.com/society/2020/apr/12/coronavirus-triggers-uk-shortage-of-illicit-drugs
  99. "Fentanyl citrate injection, USP"
    https://www.accessdata.fda.gov/drugsatfda_docs/label/2013/016619s034lbl.pdf
  100. Medicinal Chemistry Research
    https://link.springer.com/article/10.1007/s00044-012-0390-6
  101. "Fentanyl"
    https://www.drugbank.ca/drugs/DB00813
  102. MMWR. Morbidity and Mortality Weekly Report
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11620336
  103. Eleanor Hutterer
    https://www.lanl.gov/media/publications/1663/1224-fighting-fentanyl-overdose
  104. World Drug Report
    https://www.unodc.org/res/WDR-2023/WDR23_Exsum_fin_SP.pdf
  105. JAMA Pediatrics
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10167597
  106. Health Alert Network
    https://emergency.cdc.gov/han/han00384.asp
  107. Health Alert Network (HAN)
    https://emergency.cdc.gov/han/han00413.asp
  108. "Increase in Fatal Drug Overdoses Across the United States Driven by Synthetic Opioids Before and During the COVID-19 Pandemic – HAN 00438 – Health Alert Network Advisory"
    https://emergency.cdc.gov/han/2020/han00438.asp
  109. "Fentanyl | CDC's Response to the Opioid Overdose Epidemic | CDC"
    https://www.cdc.gov/opioids/basics/fentanyl.html
  110. "About Fentanyl | Maricopa County Attorney's Office, AZ"
    https://maricopacountyattorney.org/489/About-Fentanyl
  111. U.S. Drug Enforcement Administration
    https://www.dea.gov/onepill
  112. Goodman & Gilman's: The Pharmacological Basis of Therapeutics
  113. Basic & Clinical Pharmacology
    https://search.worldcat.org/oclc/1015240036
  114. "Commission on Narcotic Drugs takes decisive step to help prevent deadly fentanyl overdoses"
    http://www.unodc.org/unodc/en/frontpage/2017/March/commission-on-narcotic-drugs-takes-decisive-step-to-help-prevent-deadly-fentanyl-overdoses.html
  115. Forensic Science International
    https://doi.org/10.1016%2Fj.forsciint.2021.110715
  116. Molecular Pharmacology
    https://doi.org/10.1016%2FS0026-895X%2825%2909932-8
  117. Drug and Alcohol Dependence
    https://doi.org/10.1016%2Fj.drugalcdep.2016.11.033
  118. www.drugbank.ca
    https://www.drugbank.ca/drugs/DB00813
  119. Morgan & Mikhail's Clinical Anesthesiology
    https://search.worldcat.org/oclc/1039081701
  120. Baselt, R. (2017) Disposition of Toxic Drugs and Chemicals in Man, 11th edition, Biomedical Publications, Foster City, C
  121. Clinical Biochemistry
    https://doi.org/10.1016%2Fj.clinbiochem.2018.02.005
  122. "Fentanyl Test Strip Guidance"
    https://oasas.ny.gov/system/files/documents/2023/03/fentanyl_test_strip_guidance_0.pdf
  123. Harm Reduction Journal
    https://doi.org/10.1186%2Fs12954-021-00478-4
  124. The International Journal on Drug Policy
    https://doi.org/10.1016%2Fj.drugpo.2020.103065
  125. Future Medicinal Chemistry
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4137794
  126. Critical Reviews in Analytical Chemistry
    https://doi.org/10.1080%2F10408347.2021.1927668
  127. www.unodc.org
    https://www.unodc.org/LSS/Announcement/Details/b152bda5-5d71-4f7e-9d68-1bdd9af04a83
  128. mw- .mw- US3141823A, Janssen, PA & Francis, JG, "Method for producing analgesia", issued 21 July 1964 Archived 9 June 20
    https://patents.google.com/patent/US3141823A/en
  129. GPTA India
    https://gpatindia.com/fentanyl-synthesis-sar-mcqstructurechemical-properties-and-therapeutic-uses/
  130. Journal of Forensic Sciences
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8360110
  131. Rhodium
    https://erowid.org/archive/rhodium/chemistry/fentanyl.html
  132. Federal Register
    https://www.federalregister.gov/documents/2020/04/15/2020-07064/designation-of-benzylfentanyl-and-4-anilinopiperidine-precursor-chemicals-used-in-the-illicit
  133. Journal of Chemical Research
    https://doi.org/10.3184%2F030823405774309078
  134. ChemInform
    https://onlinelibrary.wiley.com/doi/abs/10.1002/chin.200549130
  135. "Fentanyl Profiling Program Report"
    https://www.dea.gov/sites/default/files/2022-05/FPP%20Report%20January%202022.pdf
  136. Organic Letters
    https://doi.org/10.1021%2Facs.orglett.2c03338
  137. Archives of Pharmacal Research
    https://doi.org/10.1007%2FBF03216756
  138. Brain Research Bulletin
    https://doi.org/10.1016%2Fj.brainresbull.2009.01.005
  139. Journal of Medicinal Chemistry
    https://web.archive.org/web/20071010091139/http://www.pauljanssenaward.com/janssen/A_Personal_Perspective.pdf
  140. DailyMed
    https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=8944ea18-016e-4971-876d-2365fac190ea
  141. DailyMed
    https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=90b94524-f913-48b3-3771-7b2fcffd888a
  142. Clinical Pharmacology and Therapeutics
    https://doi.org/10.1002%2Fcpt196895704
  143. News-Medical.net
    https://www.news-medical.net/health/Fentanyl-History.aspx
  144. "ACTIQ® (fentanyl citrate) oral transmucosal lozenge (1968 version revised in 2011)"
    https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/020747s033lbl.pdf
  145. "Questions and Answers about Onsolis (fentanyl buccal soluble film)"
    https://web.archive.org/web/20170722191120/https://www.fda.gov/Drugs/DrugSafety/PostmarketDrugSafetyInformationforPatientsandProviders/ucm172039.htm
  146. "2022 Aggregate Production Quota History for Selected Substances"
    https://www.deadiversion.usdoj.gov/quotas/quota_history.pdf
  147. DEA Intelligence Report
    https://www.dea.gov/sites/default/files/2020-03/DEA_GOV_DIR-008-20%20Fentanyl%20Flow%20in%20the%20United%20States_0.pdf
  148. "Misuse of Drugs Act 1971"
    http://www.legislation.gov.uk/ukpga/1971/38/schedule/2
  149. Ministerie van Binnenlandse Zaken en Koninkrijksrelaties
    https://wetten.overheid.nl/BWBR0001941/2009-07-01#BijlageI
  150. "RelayHealth's pharmacy connectivity network and reach, aligned with McKesson Specialty Care Solutions' REMS expertise, expands cancer patients' access to pain therapy"
    https://web.archive.org/web/20160129072751/http://www.relayhealth.com/news-and-events/press/ProStrakan-Chooses-RelayHealth-for-Approved-Abstral-REMS-Program-.html#sthash.GRwKE7Wc.dpuf
  151. Pharmaceutical Commerce
    https://web.archive.org/web/20160129174603/http://www.pharmaceuticalcommerce.com/brand_communications?articleid=2389%22%20%5Ct%20%22_blank
  152. "Procedures, programs and drugs that require precertification: Participating provider precertification list"
    https://web.archive.org/web/20210709183129/https://www.aetna.com/content/dam/aetna/pdfs/health-care-professionals/2021-precert-list-july.pdf
  153. "Notice regarding precertification requirement"
    https://web.archive.org/web/20080828155557/http://www.azblue.com/pdfs/medications/pharmacy/QlList.pdf
  154. "Medications requiring precertification"
    https://web.archive.org/web/20061015232701/https://www.oxhp.com/druglist/drug_precert_list.html
  155. Canada Justice Laws Website
    https://laws.justice.gc.ca/eng/acts/C-38.8/page-12.html#h-34
  156. "Canada Gazette, Part 1, Volume 157, Number 43: GOVERNMENT NOTICES"
    https://gazette.gc.ca/rp-pr/p1/2023/2023-10-28/html/notice-avis-eng.html
  157. "Canada Gazette – Regulations Amending the Precursor Control Regulations (Fentanyl Precursors)"
    https://gazette.gc.ca/rp-pr/p2/2016/2016-11-30/html/sor-dors294-eng.html
  158. Vice
    https://www.vice.com/en/article/estonia-fentanyl-crisis-what-says-about-us/
  159. The Guardian
    https://www.theguardian.com/society/2018/dec/01/dark-web-dealers-voluntary-ban-deadly-fentanyl
  160. The Washington Post
    https://www.washingtonpost.com/world/2023/04/29/mexico-us-fentanyl/
  161. Time
    https://time.com/5469231/china-fentanyl-controlled-substance/
  162. Lancet
    https://doi.org/10.1016%2FS0140-6736%2806%2969181-2
  163. BBC News Online
    https://www.bbc.co.uk/news/world-europe-17524945
  164. "Fentanyl"
    https://www.deadiversion.usdoj.gov/drug_chem_info/fentanyl.pdf
  165. The Salt Lake Tribune
    https://web.archive.org/web/20071224161858/http://opioids.com/fentanyl/actiq.html
  166. Addiction
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6548693
  167. MMWR Morb Mortal Wkly Rep
    https://www.cdc.gov/mmwr/PDF/wk/mm5729.pdf
  168. "DEA Microgram Bulletin"
    https://web.archive.org/web/20090721101918/http://www.usdoj.gov/dea/programs/forensicsci/microgram/mg0606/mg0606.html
  169. Reuters
    https://www.reuters.com/investigates/special-report/drugs-fentanyl-brokers/
  170. The Salt Lake Tribune
    http://www.sltrib.com/news/4623595-155/thousands-of-fentanyl-pills-confiscated-in
  171. Fox 13
    https://fox13now.com/2016/11/22/dea-investigating-drug-operation-near-cottonwood-heights-school/
  172. The Washington Post
    https://www.washingtonpost.com/world/national-security/us-border-officials-announce-largest-ever-fentanyl-seizure/2019/01/31/a43eeb62-258c-11e9-90cd-dedb0c92dc17_story.html
  173. "List of Schedule I Drugs"
    https://web.archive.org/web/20100109203853/http://www.deadiversion.usdoj.gov/schedules/listby_sched/sched1.htm
  174. Analytical Chemistry
    https://doi.org/10.1021%2Fac00235a003
  175. Journal of Medicinal Chemistry
    https://doi.org/10.1021%2Fjm00256a003
  176. "Recommendations for Laboratory Testing for Acetyl Fentanyl and Patient Evaluation and Treatment for Overdose with Synthetic Opioids"
    https://web.archive.org/web/20130624113939/http://emergency.cdc.gov/HAN/han00350.asp
  177. Centers for Disease Control and Prevention
  178. CTV News
    https://www.ctvnews.ca/canada/article/lethal-fentanyl-profiting-gangs-in-western-canada-while-deaths-climb/
  179. Edmonton Journal
    https://web.archive.org/web/20161220132537/http://edmontonjournal.com/news/local-news/fentanyl-doesnt-discriminate-killing-the-homeless-and-young-professionals
  180. CTV News
    https://www.ctvnews.ca/vancouver/article/2021-is-now-bcs-deadliest-year-in-the-opioid-crisis-with-2-months-of-data-left-to-collect/
  181. CBC News
    http://www.cbc.ca/news/canada/manitoba/winnipeg-naloxone-distribution-program-could-prevent-fentanyl-deaths-1.3197131
  182. Global News
    https://globalnews.ca/news/4658188/fentanyl-china-canada-diplomatic-tensions/
  183. ABC News (Australia)
    http://www.abc.net.au/news/2017-10-13/could-fentanyl-be-australias-next-deadly-drug-epidemic/9048530
  184. KnowYourStuffNZ
    https://knowyourstuff.nz/2018/03/20/fentanyl-found-at-new-zealand-festival/
  185. HealthCentral NZ
    http://healthcentral.nz/opinion-julian-buchanan-nzs-deadly-indifference-to-drug-overdose-antidote/
  186. NPR
    https://www.npr.org/2020/11/17/916890880/we-are-shipping-to-the-u-s-china-s-fentanyl-sellers-find-new-routes-to-drug-user
  187. Brookings
    https://www.brookings.edu/research/china-and-synthetic-drugs-control-fentanyl-methamphetamines-and-precursors/
  188. South China Morning Post
    https://www.scmp.com/news/china/diplomacy/article/3194183/white-house-confirms-china-has-stopped-cooperating-anti-drug
  189. NBC New
    https://www.nbcnewyork.com/news/national-international/trump-says-tariffs-to-curb-fentanyl-but-us-overdose-deaths-declining/6173140/?os=io....sxj9oul9no_journeys=true&ref=app
  190. The Guardian
    https://www.theguardian.com/society/2024/nov/26/is-the-china-us-fentanyl-pipeline-really-responsible-for-the-us-opioid-crisis
  191. The Guardian
    https://www.theguardian.com/us-news/2025/mar/08/trump-policies-drug-trade-fentanyl
  192. The New York Times
    https://www.nytimes.com/2020/05/19/world/asia/myanmar-drug-raid-fentanyl.html
  193. UNODC (Myanmar)
    https://www.unodc.org/southeastasiaandpacific/en/2021/02/myanmar-opium-survey-report-launch/story.html
  194. CNN
    https://web.archive.org/web/20230402201933/https://www.cnn.com/2023/03/30/us/california-police-union-executive-drug-scheme-opioids/index.html
  195. The Washington Post
    https://web.archive.org/web/20230325131141/https://www.washingtonpost.com/investigations/interactive/2022/dea-fentanyl-failure/
  196. CBS News
    https://www.cbsnews.com/news/fentanyl-china-mexico-drug-enforcement-administration/
  197. U.S. Department of Homeland Security
    https://www.dhs.gov/news/2023/10/03/dhs-investigation-leads-indictments-against-china-based-companies-and-employees
  198. Reuters
    https://web.archive.org/web/20230405070000/https://www.reuters.com/article/us-usa-trump-opioid-indictments-idUKKBN1CM22B
  199. trone.house.gov
    https://web.archive.org/web/20230216071828/https://trone.house.gov/2023/01/08/chinas-role-in-illicit-fentanyl-running-rampant-on-us-streets/
  200. Wilson Center
    https://web.archive.org/web/20230405062732/https://www.wilsoncenter.org/article/briefing-senate-foreign-relations-committee-countering-illicit-fentanyl-trafficking-hearing
  201. ATF.gov
    https://www.atf.gov/news/pr/convicted-felon-arrested-attempting-trade-fentanyl-four-firearms
  202. home.treasury.gov
    https://home.treasury.gov/news/press-releases/jy1523
  203. CBS News
    https://www.cbsnews.com/news/mexican-drug-cartels-american-weapons-smuggled-across-border/
  204. BBC News
    https://www.bbc.com/news/articles/cvg93nn1e6go
  205. The New York Times
    https://www.nytimes.com/2025/02/01/business/trump-tariffs-canada-mexico-china.html
  206. Onsolis.com
    http://www.onsolis.com
  207. Instanyl
    http://www.ema.europa.eu/docs/en_GB/document_library/EPAR_-_Summary_for_the_public/human/000959/WC500033142.pdf
  208. "Abstral"
    https://web.archive.org/web/20110714180154/http://newdrugreview.com/index.php/analgesic-drugs/abstral-fentanyl
  209. "Lazanda (fentanyl nasal spray) CII"
    http://www.lazanda.com/
  210. Drugs.com
    https://www.drugs.com/international/fentanyl.html
  211. "Fentanyl Buccal"
    https://www.goodrx.com/fentanyl-buccal?dosage=800mcg&form=buccal-tablet&label_override=fentanyl+buccal&quantity=1
  212. GoodRx
    https://www.goodrx.com/fentanyl-citrate?dosage=800mcg&form=lozenge&label_override=fentanyl+citrate&quantity=1
  213. Drugs.com
    https://www.drugs.com/price-guide/fentanyl
  214. "Fentanyl availability on darknet markets"
    https://www.aic.gov.au/sites/default/files/2020-05/ti590_fentanyl_availability_on_darknet_markets.pdf
  215. Drug and Alcohol Dependence
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7736148
  216. FDA
    https://web.archive.org/web/20220412190113/https://www.fda.gov/consumers/consumer-updates/accidental-exposures-fentanyl-patches-continue-be-deadly-children
  217. "Disposal of Unused Medicines: What You Should Know"
    https://www.fda.gov/drugs/safe-disposal-medicines/disposal-unused-medicines-what-you-should-know
  218. "Safe Disposal of Fentanyl Patches"
    https://www.bcpharmacists.org/fentanyl-patches
  219. "Drug Disposal: Flush Potentially Dangerous Medicine (Flush list)"
    https://web.archive.org/web/20190904234712/https://www.fda.gov/drugs/disposal-unused-medicines-what-you-should-know/drug-disposal-flush-potentially-dangerous-medicine#FlushList
  220. BBC News
    https://www.bbc.com/news/world-us-canada-45185687
  221. NBC News
    https://www.nbcnews.com/storyline/lethal-injection/nebraska-set-become-first-state-use-fentanyl-execution-n900576
  222. National Public Radio
    https://www.npr.org/2018/08/14/638250649/nebraska-prepares-to-carry-out-first-execution-using-fentanyl
  223. Newsweek
    https://www.newsweek.com/carey-dean-moore-nebraska-fentanyl-lethal-injection-death-row-execution-1071741
  224. The New York Times
    https://www.nytimes.com/2018/08/14/us/carey-dean-moore-nebraska-execution-fentanyl.html
  225. "Nebraska executes inmate using powerful opioid fentanyl"
    https://www.pbs.org/newshour/nation/nebraska-executes-inmate-using-powerful-opioid-fentanyl
  226. Journal of Analytical Toxicology
    https://doi.org/10.1093%2Fjat%2Fbks078
  227. "Gas 'killed Moscow hostages'"
    https://news.bbc.co.uk/2/hi/europe/2365383.stm
  228. The Washington Post
    https://web.archive.org/web/20070313010058/https://pqasb.pqarchiver.com/washingtonpost/access/224294031.html?dids=224294031:224294031&FMT=ABS&FMTS=ABS:FT&fmac=&date=Oct+28%2C+2002&author=Susan+B.+Glasser+and+Peter+Baker&desc=Gas+in+Raid+Killed+115+Hostages
  229. "Russia names Moscow siege gas"
    https://news.bbc.co.uk/2/hi/europe/2377563.stm
  230. "How Opioids Were Used as Weapons During the Moscow Theater Hostage Crisis"
    https://www.history.com/news/opioid-chemical-weapons-moscow-theater-hostage-crisis
  231. Journal of Veterinary Pharmacology and Therapeutics
    https://doi.org/10.1111%2Fj.1365-2885.2012.01416.x
  232. Veterinary Anaesthesia and Analgesia
    https://doi.org/10.1111%2Fvaa.12215
  233. Canadian Journal of Veterinary Research
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1263601
  234. Saunders Handbook of Veterinary Drugs
  235. Veterinary Anesthesia and Analgesia, The 6th Edition of Lumb and Jones
  236. Small Animal Anesthesia Techniques
    https://onlinelibrary.wiley.com/doi/10.1002/9781119710868.s2
  237. Cite error: The named reference papich was invoked but never defined (see the help page).
Image
Source:
Tip: Wheel or +/− to zoom, drag to pan, Esc to close.