A Promising Alternative to Opioid Pain Medications.  NIDA. (2019, February 12).  https://www.drugabuse.gov/news-events/nida-notes/2019/02/promising-alternative-to-opioid-pain-medications

Chronic use of tramadol after acute pain episode: cohort study  Thiels Cornelius A, Habermann Elizabeth B, Hooten W Michael, Jeffery Molly M.  BMJ 2019; 365 :l1849  https://www.bmj.com/content/365/bmj.l1849

US-Studie sieht Abhängigkeitspotenzial bei Tramadol Rochester – (...) Die Autoren einer Studie im Britischen Ärzteblatt(BMJ2019; 365: l1849) vermuten (..), dass das Abhängigkeitspotenzial von Tramadol unterschätzt wird. (aerzteblatt.de, 15.0...

Opioids in the immune system: from experimental studies to clinical practice. Moyano J, Aguirre L. Rev Assoc Med Bras (1992). 2019 Feb;65(2):262-269. doi: 10.1590/1806-9282.65.2.262. Review. http://www.scielo.br/scielo.php?script=sci_arttext&am...

Metabolic Pathways and Potencies of New Fentanyl Analogs. Wilde M, Pichini S, Pacifici R, Tagliabracci A, Busardò FP, Auwärter V, Solimini R. Front Pharmacol. 2019 Apr 5;10:238. doi: 10.3389/fphar.2019.00238.  https://www.ncbi.nlm.nih.gov/...

UK. Opioid painkillers 'must carry prominent warnings' All opioid medicines in the UK will carry prominent warnings on their labels saying they can cause addiction, the health secretary has announced. (BBC, 28.04.2019) https://www.bbc.com/news/h...