SHEET /m/tramadol · PubChem CID 33741 · CAS 27203-92-5 · REV 2026.07
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Tramadol
from sourceC16H25NO2 · 263.37 g/mol
Biomadol · Contramid · Labesfal · Ralivia ER
What is Tramadol?
An opioid painkiller for moderate pain that also acts on serotonin and norepinephrine, so it behaves partly like an antidepressant. from source
CategoryPrescription medicine
Fig. 1 · 2D structure RDKit
SMILES
CN(C)C[C@H]1CCCC[C@@]1(C2=CC(=CC=C2)OC)OWhere you'll find it
Dispensed on prescription, not sold on a shelf. See the rest of the prescription medicine group.
Relative acute toxicity from source
Animal study data · LD50
- Reported LD50
- 228 mg/kg · moderately toxic
- Species
- rat
- Route
- oral
An LD50 describes acute toxicity under experimental conditions and is not a safe or dangerous dose for a person.
Toxicity & hazards
Toxicity · LD50
228 mg/kg · moderately toxic · LD50 rat oral from source
3 more reported values
- 270 mg/kgLD50 · oral · mouse
- 60.45 mg/kgLD50 · iv · mouse
- 200 mg/kgLD50 · other · mouse
DangerToxicIrritantEnvironmentalH300, H301, H302, H312, H315, H319, H331, H332, H335, H336, H401, H411from source
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