Acocella, CM (2005). Using diaries to assess non prescription drug use among university students. Journal of Drug Education 35, 267–274.
Agaba, EI, Agaba, PA, Wigwe, CM (2004). Use and abuse of analgesics in Nigeria: a community survey. Nigerian Journal of Medicine 13, 379–382.
Agnich, L, Stogner, JM, Miller, BL, Marcum, C (2013). Purple drank prevalence and characteristics of misusers of codeine cough syrup mixtures. Addictive Behaviors 38, 2445–2449.
Agyapong, VIO, Singh, K, Savage, M, Thekiso, BT, Finn, M, Farren, CK, McLoughlin, DM (2013). Use of codeine-containing medicines by Irish psychiatric in-patients before and after regulatory limitations on their supply. Irish Journal of Psychological Medicine 30, 7–12.
Akram, G, Roberts, K (2003). Pharmacists’ management of over-the-counter medi-cation requests from methadone patients. Journal of Substance Use 8, 215–222.
Albsoul-Younes, A, Wazaify, M, Yousef, AM, Tahaineh, L (2010). Abuse and misuse of prescription and non prescription drugs sold in community pharmacies in Jordan. Substance Use and Misuse 45, 1319–1329.
Allotey, P, Reidpath, DD, Elisha, D (2004). “Social medication” and the control of children: a qualitative study of over-the-counter medication among Australian children. Pediatrics 114, e378–e383.
Babalonis, S, Lofwall, MR, Nuzzo, PA, Siegel, AJ, Walsh, SL (2013). Abuse liability and reinforcing efficacy of oral tramadol in humans. Drug and Alcohol Dependence 129, 116–124.
Barrett, SP, Meisner, JR, Stewart, SH (2008). What constitutes prescription drug misuse? Problems and pitfalls of current conceptualizations. Current Drug Abuse Reviews 1, 255–262.
Bendtsen, L, Birk, S, Kasch, H, Aegidius, K, Sørensen, PS, Thomsen, LL, Poulsen, L, Rasmussen, MJ, Kruuse, C, Jensen, R, Danish Headache Society (2012). Reference programme: diagnosis and treatment of headache disorders and facial pain. Danish Headache Society. Journal of Headache and Pain 13, 1–29.
Brands, B, Blake, J, Sproule, B, Gourley, D, Busto, U (2004). Prescription opioid abuse in patients presenting for methadone maintenance treatment. Drug and Alcohol Dependence 73, 199–207.
Casati, A, Sedefov, R, Pfeiffer-Gerschel, T (2012). Misuse of medicines in the European union: a systematic review of the literature. European Addiction Research 18, 228–245.
Cohen, DP, Unoh, E, Barry, H, O’Connor, JJ (2009). Codeine misuse among service users on a methadone treatment programme. Irish Journal of Medical Science 179, 465.
Comments on the Reported Statistics on Narcotic Drugs Austria: 73-93 – International Narcotics Controls Board (INCB) (https://www.incb.org/). Accessed October 2013.
Cooper, RJ (2011). Respectable addiction – a qualitative study of over the counter medicine abuse in the UK. Sheffield, UK: School of Health and Related Research (ScHARR), University of Sheffield.
Cooper, RJ (2013
a). I can’t be an addict. I am.’ Over-the-counter medicine abuse: a qualitative study. BMJ Open Online 3, e002913.
Cooper, RJ (2013
b). Over-the-counter medicine abuse: a review of the literature. Journal of Substance Use 18, 82–107.
Derry, S, Karlin, SM, Moore, RA (2013). Single dose oral ibuprofen plus codeine for acute postoperative pain in adults. The Cochrane Database Systematic Review 3, CD010107.
Dobbin, M, Tobin, C (2008). Over-the-Counter (OTC) Ibuprofen/Codeine Analgesics: Misuse and Harm. Drugs Policy and Services Branch, Department of Human Services: Melbourne, Vic, Australia.
Elwood, W (2001). Sticky business: patterns of procurement and misuse of pescription cough syrup in houston. Journal of Psychoactive Drugs 33, 121–133.
Fishbain, DA, Cole, B, Lewis, J, Rosomoff, HL, Rosomoff, RS (2008). What percentage of chronic non malignant pain patients exposed to chronic opioid analgesic therapy develop abuse/addiction and/or aberrant drug-related behaviors? A structured evidence-based review. Pain Medicine 9, 444–459.
Ford, JA (2009). Misuse of over-the-counter cough or cold medications among adolescents: prevalence and correlates in a national sample. Journal of Adolescent Health 44, 505–507.
Fredheim, OMS, Skurtveit, S, Moroz, A, Breivik, H, Borchgrevink, PC (2009). Prescription pattern of codeine for non-malignant pain: a pharmacoepidemiological study from the Norwegian Prescription Database. Acta Anaesthesiological Scandinavica 53, 627–633.
Frei, MY, Nielsen, S, Dobbin, MD, Tobin, CL (2010). Serious morbidity associated with misuse of over-the-counter codeine-ibuprofen analgesics: a series of 27 cases. Medical Journal Australia 193, 294–296.
Gossop, M, Darke, S, Griffiths, P, Hando, J, Powis, B, Hall, W, Strang, J (1995). The Severity of Dependence Scale (SDS): psychometric properties of the SDS in English and Australian samples of heroin, cocaine and amphetamine users. Addiction 90, 607–614.
Hamer, A, Spark, J, Wood, P, Roberts, E (2013). The upscheduling of combination analgesics containing codeine: the impact on the practice of pharmacists. Research in Social and Administrative Pharmacy 10, 669–678.
Giorgi, A (1997). The theory, practice, and evaluation of the phenomenological method as a qualitative research procedure. Journal of Phenomenological Psychology 28, 235–260.
Husserl, E (1970). Logical Investigation. New York: Humanities Press.
INCB (International Narcotics Controls Board) (2012). Comments on the Reported Statistics on Narcotic Drugs Austria, 73--93 (https://www.incb.org/). Accessed October 2013.
Inciardi, JA, Surratt, HL, Cicero, TJ, Rosenblum, A, Ahwah, C, Bailey, JE, Dart, RC, Burke, JJ (2010). Prescription drugs purchased through the internet: who are the end users? Drug and Alcohol Dependence 110, 21–29.
Ingelman-Sundberg, M, Sim, SC, Gomez, A, Rodriguez-Antona, C (2007). Influence of cytochrome P450 polymorphisms on drug therapies: pharmacogenetic, pharmacoepigenetic and clinical aspects. Pharmacology and Therapeutics 116, 496–526.
Johansson, BA, Berglund, M, Hanson, M, Pohlen, C, Persson, I (2003). Dependence on legal psychotropic drugs among alcoholics. Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism 38, 613–618.
Karlsson, G (1995). Psychological Qualitative Research from a Phenomenological Per-Spective. Almqvist & Wiksell International: Stockholm, Sweden.
Katsarava, Z, Jensen, R (2007). Medication-overuse headache: where are we now? Current Opinion in Neurology 20 326–330.
Kelly, LE, Madadi, P (2012). Is there a role for therapeutic drug monitoring with codeine? Therapeutic Drug Monitoring 34, 249–256.
Lam, CM, Shek, D (2006). A qualitative study of cough medicine abuse among Chinese young people in Hong Kong. Journal of Substance Abuse 11, 233–244.
Lao, YZ, Jiang, ZY, Tong, ZS, Pang, ZT, Xu, JX (2010). Clinical features and defense styles in patients with cough medicine abuse. Medical Journal of Chinese People’s Health 22, 272–274.
Lincoln, YS, Guba, EG (1985). Naturalistic Inquiry. Sage: Beverly Hills, CA.
Manchia, M, Alda, M, Clakin, C (2013). Repeated erythromycin/codeine-induced psychotic mania. Clinical Neuropharmacology 36, 177–178.
Mattick, RP, Kimber, J, Breen, C, Davoli, M (2008). Buprenorphine maintenance versus placebo or methadone maintenance for opioid dependence. Cochrane Database of Systematic Reviews 2.
Maxwell, JA (1992). Understanding and validity in qualitative research. Harvard Educational Review 62, 279–301.
McAvoy, BR, Dobbin, M, Tobin, C (2011). Over-the-counter codeine analgesic misuse and harm: characteristics of cases in Australia and New Zealand. New Zealand Medical Journal 124, 29–33.
Myers, B, Siegfried, N, Parry, CD (2003). Over-the-counter and prescription medicine misuse in Cape Town – findings from specialist treatment centres. South African Medical Journal 93, 367–370.
Nielsen, S, Bruno, R, Carruthers, S, Fischer, J, Lintzeris, N, Stoove, M (2008). Investigation of Pharmaceutical Misuse Amongst Drug Treatment Clients. Turning Point Alcohol and Drug Centre: Melbourne, Australia.
Nielsen, S, Cameron, J, Lee, N (2011). Characteristics of a nontreatment-seeking sample of over-the-counter codeine users: implications for intervention and prevention. Journal of Opioid Management 7, 363–370.
Nielsen, S, Cameron, J, Pahoki, S (2010). Over the Counter Codeine Dependence. Turning Point Drug and Alcohol Centre: Vic, Australia.
Nielsen, S, Cameron, J, Pahokia, S (2013). Opportunities and challenges: Over-the-counter codeine supply from the codeine consumer’s perspective. International Journal of Pharmacy Practice 21, 161–168.
Nielsen, S, Murnion, B, Dunlop, A, Degenhardt, L, Demirkol, A, Muhleisen, P, Lintzeris, N (2014). Comparing treatment-seeking codeine users and strong opioid users: findings from a novel case series. Drug and Alcohol Review 34, 304–311.
Nielsen, S, Roxburgh, A, Bruno, R, Lintzeris, N, Jefferson, A, Degenhardt, L (2015). Changes in non-opioid substitution treatment episodes for pharmaceutical opioids and heroin from 2002 to 2011. Drug Alcohol Depend 149, 212–219.
Pates, R, McBride, AJ, Li, S, Ramadan, R (2002). Misuse of over-the-counter medicines: a survey of community pharmacies in a South Wales health authority. Pharmaceutical Journal 268, 179–182.
Peters, R, Yacoubian, GS, Rhodes, W, Forsythe, KJ, Bowers, KS, Eulian, VM, Mangum, CA, O’Neal, JD, Martin, Q, Essien, EJ (2007
a). Beliefs and social norms about codeine and promethazine hydrochloride cough syrup (CPHCS) use and addiction among multi-ethnic college students. Journal of Psychoactive Drugs 39, 277–282.
Peters, RJ, Williams, M, Ross, MW, Atkinson, J, Yacoubian, GS (2007
b). Codeine cough syrup use among African-American crack cocaine users. Journal of Psychoactive Drugs 39, 97–102.
Peters, RJ, Amos, C, Meshack, A, Savage, C, Sinclair, MM, Williams, LT, Markham, C (2007
c). Codeine cough syrup use among sexually active, African-American high school youths: why southern males are down to have sex. The American Journal on Addictions 16, 144–145.
Peters, RJ, Kelder, SH, Markham, CM, Yacoubian, GS, Peters, LA, Ellis, A (2003). Beliefs and social norms about codeine and promethazine hydrochloride cough syrup (CPHCS) onset and perceived addiction among urban Houstonian adolescents: an addiction trend in the city of lean. Journal of Drug Education 33, 415–425.
Reed, K, Bond, A, Witton, J, Cornish, R, Hickman, M, Strang, J (2011). The Changing Use of Prescribed Benzodiazepines and Z-Drugs and of Over-the-Counter Codeine-Containing Products in England: A Structured Review of Published English and International Evidence and Available Data to Inform Consideration of the Extent of Dependence and Harm. The National Addiction Centre, Kings College London and School of Social and Community Medicine, University of Bristol, United Kingdom: London and Bristol.
Robinson, GM, Robinson, S, McCarthy, P, Cameron, C (2010). Misuse of over-the-counter codeine-containing analgesics: dependence and other adverse effects. New Zealand Medical Journal 123, 59–64.
Romach, MK, Sproule, BA, Sellers, EM, Somer, G, Busto, UE (1999). Long-term codeine use is associated with depressive symptoms. Journal of Clinical Psychopharmacology 19, 373–376.
Roumie, CL, Griffin, MR (2004). Over-the-counter analgesics in older adults, a call for improved labelling and consumer education. Drugs and Aging 21, 485–498.
Roussin, A, Bouyssi, A, Pouche, L, Pourcel, L, Lapeyre-Mestre, M (2013). Misuse and dependence on non-prescription codeine analgesics or sedative H1 antihistamines by adults: a cross-sectional investigation in France. PLoS One 8, e76499.
Shek, DT, Lam, CM (2006). Adolescent cough medicine abuse in Hong Kong: implications for the design of positive youth development programs in Hong Kong. International Journal of Adolescent Medicine and Health 18, 493–503.
Shek, DTL, Lam, CM (2008). Beliefs about cough medicine abuse among Chinese young people in Hong Kong. Social Behavior and Personality 36, 135–144.
Skurtviet, S, Faru, K, Borchgrevink, P, Handal, M, Fredheim, O (2011). To what extent does a cohort of new users of weak opioids develop persistent or probable problematic opioid use? International Association for the Study of Pain 152, 1555–1561.
Sproule, BA, Busto, UE, Somer, G, Romach, MK, Sellers, EM (1999). Characteristics of dependent and nondependent regular users of codeine. Journal of Clinical Psychopharmacology 19, 367–372.
Sweileh, WM, Arafat, RT, Al-Khyat, LS, Al-Masri, DM, Jaradat, NA (2004). A pilot study to investigate over-the-counter drug abuse and misuse in Palestine. Saudi Medical Journal 25, 2029–2032.
Tang, AK, Tang, WK, Liang, HJ, Chan, F, Mak, SC, Ungvari, GS (2012). Clinical characteristics of cough mixture abusers referred to three substance abuse clinics in Hong Kong: a retrospective study. East Asian Archives of Psychiatry 22, 154–159.
Thekiso, B, Farren, C (2010). Over the counter’ (over the counter) opiate abuse treatment. Irish Journal of Psychological Medicine 27, 189–191.
Tobin, C, Dobbin, M, McAvoy, B (2013). Regulatory responses to over the-counter codeine analgesic misuse in Australia, New Zealand and the United Kingdom. Australian and New Zealand Journal of Public Health 37, 483–488.
Tremlett, M, Anderson, BJ, Wolf, A (2010). Pro-con debate: is codeine a drug that still has a useful role in pediatric practice? Paediatric Anaesthesia 20, 183–194.
2011). The non medicinal use of prescription drugs. Discussion paper. United Nations Publication: Vienna.
2013). World drug report 2013. United Nations Publication: Vienna.
Van Hout, MC (2015). Nod and wave: an internet study of the codeine intoxication phenomenon. International Journal of Drug Policy 26, 67–77.
Van Hout, MC, Bergin, M, Foley, M, Rich, E, Rapca, AI, Harris, R, Norman, I (2014). A Scoping review of codeine use, misuse and dependence, final report. CODEMISUSED Project European Commission 7th Framework Programme, EU. Brussels.
Wilkinson, D, Thelwall, M (2011). Researching personal information on the public web: methods and ethics. Social Science Computer Review 29, 387–401.
Wilsey, BL, Fishman, SM, Gilson, AM, Casamalhuapa, C, Baxi, H, Zhang, H, Li, CS (2010). Profiling multiple provider prescribing of opioids, benzodiazepines, stimulants, and anorectics. Drug and Alcohol Dependence 112, 99–106.
Wilson, KM, Singh, P, Blumkin, AK, Dallas, L, Klein, JD (2010). Knowledge gaps and misconceptions about over-the-counter analgesics among adolescents attending a hospital-based clinic. American Academy of Pediatrics 10, 228–232.
Yang, Y, Yuan, QY (2008). Investigation and analysis on personalities of male – codeine phosphate addicts by MMPI. Chinese Journal of Drug Abuse Prevention and Treatment 14, 143–145.
Zhou, S (2009). Polymorphism of human cytochrome P450 2D6 and its clinical significance. Part 1. Clinical Pharmacokinetics 48, 689–723.