- Tramadol found to offer limited relief for chronic pain while raising risk of serious side effects  News-Medical
- Common painkiller is ‘not very effective’ AND ‘doubles the risk of heart disease’  The Sun
- Tramadol Risks Outweigh Benefits for Chronic Pain, Study Finds  Букви
- Painkiller taken by millions doesn’t ease chronic pain, study warns — and it can trigger serious side effects  New York Post
- Tramadol: New study casts doubt on effectiveness of popular painkiller  The Independent
​Tramadol found to offer limited relief for chronic pain while raising risk of serious side effects  News-MedicalCommon painkiller is ‘not very effective’ AND ‘doubles the risk of heart disease’  The SunTramadol Risks Outweigh Benefits for Chronic Pain, Study Finds  БуквиPainkiller taken by millions doesn’t ease chronic pain, study warns — and it can trigger serious side effects  New York PostTramadol: New study casts doubt on effectiveness of popular painkiller  The Independent by Soban News (international And National News)