Adverse Drug Reaction Classification System

Pharmaceutical Information
Drug Name Tramadol
Drug ID BADD_D02254
Description Tramadol is a centrally acting synthetic opioid analgesic and SNRI (serotonin/norepinephrine reuptake-inhibitor) that is structurally related to [codeine] and [morphine]. Due to its good tolerability profile and multimodal mechanism of action, tramadol is generally considered a lower-risk opioid option for the treatment of moderate to severe pain. It is considered a Step 2 option on the World Health Organization's pain ladder and has about 1/10th of the potency of [morphine]. Tramadol differs from other traditional opioid medications in that it doesn't just act as a μ-opioid agonist, but also affects monoamines by modulating the effects of neurotransmitters involved in the modulation of pain such as serotonin and norepinpehrine which activate descending pain inhibitory pathways.[A182279] Tramadol's effects on serotonin and norepinephrine mimic the effects of other SNRI antidepressants such as [duloxetine] and [venlafaxine]. Tramadol exists as a racemic mixture consisting of two pharmacologically active enantiomers that both contribute to its analgesic property through different mechanisms and are also themselves metabolized into active metabolites: (+)-tramadol and its primary metabolite (+)-O-desmethyl-tramadol (M1) are agonists of the μ opioid receptor while (+)-tramadol inhibits serotonin reuptake and (-)-tramadol inhibits norepinephrine reuptake. These pathways are complementary and synergistic, improving tramadol's ability to modulate the perception of and response to pain.[A4269,A183842] Tramadol has also been shown to affect a number of other pain modulators within the central nervous system as well as non-neuronal inflammatory markers and immune mediators.[A183728,A183734,A183761,A17159,A182300] Due to the broad spectrum of targets involved in pain and inflammation, it's not surprising that the evidence has shown that tramadol is effective for a number of pain types including neuropathic pain, post-operative pain, lower back pain, as well as pain associated with labour, osteoarthritis, fibromyalgia, and cancer. Due to its SNRI activity, tramadol also has anxiolytic, antidepressant, and anti-shivering effects which are all frequently found as comorbidities with pain.[A182300] Similar to other opioid medications, tramadol poses a risk for development of tolerance, dependence and abuse. If used in higher doses, or with other opioids, there is a dose-related risk of overdose, respiratory depression, and death.[A183830,F4679] However, unlike other opioid medications, tramadol use also carries a risk of seizure and serotonin syndrome, particularly if used with other serotonergic medications.[A183836,A179926]
Indications and Usage Indicated in the treatment of moderate to severe pain. Consider for those prone to constipation or respiratory depression. Tramadol is used to treat postoperative, dental, cancer, and acute musculosketetal pain and as an adjuvant to NSAID therapy in patients with osteoarthritis.
Marketing Status Prescription; Discontinued
ATC Code N02AX02
DrugBank ID DB00193
KEGG ID D08623
MeSH ID D014147
PubChem ID 33741
TTD Drug ID D05GKD
NDC Product Code Not Available
Synonyms Tramadol | Tramundin | Biodalgic | Jutadol | K-315 | K 315 | K315 | MTW-Tramadol | MTW Tramadol | MTWTramadol | Nobligan | Prontofort | Zytram | Takadol | Theradol | Tiral | Tramadol Lindo | Topalgic | Tradol | Tradol-Puren | Tradol Puren | TradolPuren | Tradonal | Tralgiol | Trama AbZ | Trama KD | Trama-Dorsch | Trama Dorsch | TramaDorsch | Biokanol | Tramabeta | Tramadin | Tramadol-ratiopharm | Tramadolratiopharm | Tramadol Ratiopharm | Tramadoc | Tramadol PB | Tramadol acis | Tramadol AL | Tramadol Basics | Tramadol Bayvit | Tramadol Bexal | Tramadol 1A | Ranitidin 1A Pharma | Trama 1A Pharma | Tramadol Cinfa | Tramadol Edigen | Tramadol Hydrochloride | Trasedal | Ultram | Tramadol Heumann | Xymel 50 | Zamudol | Zumalgic | Zydol | Tramadol Kern | Tramadol Lichtenstein | Tramadol Mabo | Tramadol Normon | Tramadol Stada | Tramadol-Dolgit | Tramadol Dolgit | TramadolDolgit | Tramadol-Hameln | Tramadol Hameln | TramadolHameln | Tramadolor | Tramadura | Tramagetic | Tramagit | Tramake | Tramal | Tramex | Adolonta | Contramal | Amadol | Tramadol Asta Medica
Chemical Information
Molecular Formula C16H25NO2
CAS Registry Number 123154-38-1
SMILES CN(C)CC1CCCCC1(C2=CC(=CC=C2)OC)O
Chemical Structure
ADR Related Proteins Induced by Drug
ADR Term Protein Name UniProt AC TTD Target ID PMID
Seizures (incl subtypes)Cytochrome P450 2D6P10635T573929399121; 10208348; 12927414; 10772431; 15748098; 10983742
ADRs Induced by Drug
ADR Term ADReCS ID ADR Frequency (FAERS) ADR Severity Grade (FAERS) ADR Severity Grade (CTCAE)
Angina unstable24.04.04.004; 02.02.02.004--Not Available
Angioedema23.04.01.001; 10.01.05.009--Not Available
Anhedonia19.15.02.007--Not Available
Anorectal disorder07.03.01.001--Not Available
Anosmia22.04.03.006; 17.04.04.001--
Anxiety19.06.02.002--
Aortic aneurysm24.02.03.001--Not Available
Apathy19.04.04.002--Not Available
Apnoea22.02.01.0010.000787%
Appendicitis11.01.07.001; 07.19.01.001--
Arrhythmia02.03.02.0010.000157%Not Available
Arthralgia15.01.02.001--
Arthritis15.01.01.001--
Arthropathy15.01.01.003--Not Available
Arthropod bite12.01.08.022--Not Available
Ascites09.01.05.003; 07.07.01.001; 02.05.04.0020.000157%
Aspartate aminotransferase decreased13.03.01.005--Not Available
Aspartate aminotransferase increased13.03.01.006--
Asphyxia22.02.02.001; 12.01.08.0110.000057%Not Available
Asthenia08.01.01.001--Not Available
Asthma10.01.03.010; 22.03.01.002--Not Available
Ataxia17.02.02.001; 08.01.02.0040.000126%
Atrial fibrillation02.03.03.002--
Atrial flutter02.03.03.003--
Back disorder15.03.01.014--Not Available
Back injury12.01.09.002--Not Available
Back pain15.03.04.005--
Bacteriuria20.02.01.023; 11.02.01.014--Not Available
Benign breast neoplasm21.05.01.009; 16.14.01.005--Not Available
Bipolar I disorder19.16.01.002--Not Available
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